I did everything you suggested and it finally works, thank you. However I have another problem, the speed is very unsatisfactory, it's around 2 MB/s whatever MTU number or server I set. The exact same torrent goes absolutely haywire with speed on the very same PC, just without VPN. I tested multiple torrents and it's the same for all of them, Ubuntu distro achieves highest speed with 8 - 18 MB/s while without VPN it goes 90 MB/s (I have 1 Gbps fiber). Any tips for that? I tried again many things, changing MTU, changing servers (Netherlands, then servers closest to me, then servers with highest bandwidth according to Client area here). Thank you very much for your help and responses.