# 4.熱門問題

- [1.频繁掉线?后台断网？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/untitled-1.md)
- [2.什麼是最佳位置？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/untitled.md)
- [3.為什麼有的時候節點很慢？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/untitled-8.md)
- [4.網址導航？VPN能做什麼？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/13.-wang-zhi-dao-hang-zen-me-mei-you-le.md)
- [5.為什麼會遇到2小時斷開的通知？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/untitled-5.md)
- [6.一直連不上？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/untitled-2.md)
- [7.你們安全嗎？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/untitled-3.md)
- [8.什麼是高匿線路？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/untitled-4.md)
- [9.IOS如何下載？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/untitled-6.md)
- [10.PC模式？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/1.md)
- [11.無法更新版本？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/12.ios-ru-he-xia-zai.md)
- [12.google play無法使用？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/14.google-play-wu-fa-shi-yong.md)
- [13.免費、VIP 與SVIP有什麼區別？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/13.-mian-fei-vip-yu-svip-you-shen-me-ou-bie.md)
- [14.Android高級功能無法使用？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/14.android-gao-ji-gong-neng-wu-fa-shi-yong.md)
- [15.Android分應用代理？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/15.android-fen-ying-yong-dai-li.md)
- [16.智能代理？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/16.android-zhi-neng-dai-li.md)
- [17.網站提示“ERR\_SSL\_PROTOCOL\_ERROR”](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/17.-wang-zhan-ti-shi-errsslprotocolerror.md)
- [18.退款？](https://pupa.gitbook.io/pupa/4.-chang-jian-wen-ti/18.-tui-kuan.md)


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