You are allowed to link multiple devices to a single account, with the device limit based on the selected subscription plan. Key points regarding this feature include:

• Accounts can be accessed on various platforms irrespective of the initial sign-up platform (e.g., Android, iOS, macOS, Windows).
• The number of supported devices depends on the subscription plan, potentially allowing an unlimited number of devices per account.
• Notifications will be sent if the connected devices surpass the plan limit, prompting users to remove excess devices upon logging in.
• Each device can be connected to a maximum of two accounts, whether it is a computer or a mobile device.

Absolutely! You can enjoy O2 VPN for China for free indefinitely through the "Daily Check-in" feature. Each day, you receive 15 minutes of free usage time. Additionally, you earn 1 point for each successful referral, which can be exchanged for a 1-day pass. Here are the key points:

• O2 VPN for China offers the "Daily Check-in" feature for free indefinitely.
• New users get an initial 15 minutes of free usage time, with an additional 15 minutes available by completing the check-in process the following day.
• During the free trial, you can use our services without any restrictions on usage, but server access is limited to locations covered by the free plan.
• You can earn points by participating in our referral program, which can then be redeemed for various plans.

Certainly! We offer a 15-minute daily trial period. To start your trial, please follow these steps:

1. Download the O2 VPN for China app.
2. Create a new account.
3. Tap the "Daily Check-In" button on the main screen of the app.

Please be aware that this free trial is subject to change and may be discontinued at any time without prior notice.

O2 VPN for China prioritizes user privacy, guaranteeing no activity or connection logs are maintained. Additionally, the VPN service refrains from storing any data that could be utilized to trace specific network activities or behaviors back to an individual user.

Feel free to reach out to us via the following methods:

• Website: http://tryo2app.com
• Email: [email protected]
• QQ: coming soon
• Telegram: coming soon

Feel free to reach out to us via the following methods:

• Website: http://tryo2app.com
• Email: [email protected]
• QQ: coming soon
• Telegram: coming soon

The split mode feature in O2 VPN for China supports web applications like Telegram, WhatsApp, or Gmail, which utilize HTTPS. This mode can alter the routing for both HTTP (port 80) and HTTPS (port 443), facilitating access to the web versions of these applications. However, the application versions may use various other ports.
To ensure access, the following measures should be implemented:

• Use the "Global Mode" option available in the routing settings.
• Modify the proxy settings of the application. For example, here is how you can change the proxy settings for the LINE app:
  
  

• When trying to sign in from a new device and surpass the device limit, you will be directed to the "Unbind Device" page where you can disconnect any linked devices.
• Alternatively, you can go to "Menu" > "App Settings" > "Device List" to choose and unbind a device you prefer.

It's not unusual to forget usernames or passwords, and we strive to make recovery as easy as possible. Here are your options:

• If you've forgotten your username, please reach out to us and submit a screenshot of your payment record.
• If you've misplaced your password, simply use the "forgot password" feature available in the app.

We've observed that some users have difficulty selecting a server after choosing a region.
To streamline the process, we now display only regions. O2 VPN for China will automatically connect you to the highest performing server within your chosen region. Here are the details:

• The location menu will only show regions, with each region containing hundreds of servers. Upon selecting a region, O2 VPN for China will automatically connect you to the server offering the best performance based on your network conditions.
• If you're not satisfied with the server you're connected to, you can disconnect and reconnect to the same region to be linked to a different server.
• You may repeat this process until you find a server that meets your needs.

• Slow internet speeds locally (without using a VPN).
• High user traffic at certain VPN server locations.

To resolve these issues, you can try the following methods:

• Check your local internet speed by temporarily disabling the VPN.
• Test different network connections such as WiFi, 4G, or 5G with the VPN off to identify any connection problems. For example, if your WiFi is unreliable, switch to a mobile data connection.
• Turn off the VPN, switch to a new server location, and then reconnect.
• If you want to stay connected to the same geographical area, disconnect and reconnect as this could link you to a different server within the same region.
• Continue these tests until you find the most suitable server for your requirements.

You can earn points by referring friends and using them to redeem rewards. Here's the process:

• First, get your "Referral Code" or "Referral Link" by going to "Share & Gift" and clicking on "Share Now." You can then send it to friends or post it on your social media profiles or blog.
• You will receive 1 point for each friend who successfully refers, which you can exchange for a 1-day pass.
• You can view your redeemed plans in the "My Account" section once you've redeemed your points.
• For a referral to be successful, your referred friend must download and start using the app. If they download but do not use the app, you will not receive your referral point until they begin using it.

Occasionally, there may be a delay in processing payments via the gateway. Here are the important points to remember:

• We accept several payment methods, including Alipay, WeChat QR Code Scanning Payment, and UnionPay.
• If you've successfully made a payment but don't immediately see the corresponding plan reflected in your account, wait for about 5 minutes, then log out and log back in.
• If you continue to face issues after trying the above steps, take a screenshot of your payment confirmation and contact us for further assistance.

这种情况下，通常是因为系统代理地址设置不正确或受第三方软件的屏蔽和阻止所致。解决办法是手动添加黑豹加速器（O2 VPN for China）的科学上网代理地址。
请按照以下步骤操作：

• 在 Windows 系统中搜索并打开“Internet 选项”。
• 转到“连接”标签页。
• 点击底部右侧的“局域网设置”按钮。
• 在局域网（LAN）设置页面的“使用自动配置脚本”选项中勾选√，并在下方的地址框中填写：http://127.0.0.1:7525/proxy。
• 点击右侧底部的“确定”按钮，然后再次点击“确定”关闭 Internet 属性。
• 最后，请完全关闭浏览器，然后重新打开浏览器即可享受科学上网。

When installing the O2 VPN for China app on Windows, you might see alerts from your antivirus or firewall programs because VPN applications can be seen as potential threats. If these alerts appear, you should select options like "allow," "agree," or "trust" to proceed with the installation. This is crucial for the VPN to work correctly, as it needs to alter proxy settings. Not granting these permissions could impede the proper functioning of O2 VPN for China.

By utilizing O2 VPN for China on your Windows computer, you can ensure the security and safety of all your activities. Connecting to one of our O2 VPN for China server locations allows you to change your device's IP address, protect your data on unsecured Wi-Fi networks, and access restricted websites and services.

Although free O2 VPN for China and proxy services are available, free O2 VPN for China is generally not recommended because they often lack the privacy and security measures found in paid O2 VPN for China Free O2 VPN for China frequently underperform, might endanger your data by selling it, and usually do not provide sufficient protection against potential cyber attacks.

Getting started couldn't be easier! Just sign up for O2 VPN for China, install the app on your device, and tap the "On" button that appears on your screen.

Although Windows 10 and 11 include a VPN client, it doesn't provide a comprehensive VPN service. To fully benefit, you must connect to a third-party VPN such as O2 VPN for China. The setup process can be somewhat challenging, so many people prefer using the O2 VPN for China app instead.

A VPN forms a virtual network by connecting several computers over the internet. While it was initially aimed at enhancing speed and security, its primary functions now include privacy, encryption, and accessing restricted content.