Google Translation:

Prohibited clients (using them = BAN)
- Azureus / Vuze - all versions
- Bitcommet - all versions
- Bitlord - all versions

Recommended clients:
- qBittorrent 4.x.x and newer
- Deluge 1.3.15, 2.0.3 and newer
- Transmission
- rTorrent ver. 0.8.9, 0.9.2, 0.9.3
- uTorrent ver. 2.0.4, 2.2.1 - newer versions are not recommended and you use them at your own risk. Any problems related to incorrect statistics or problems with the tracker connection will be ignored by the Crew and Support and may lead to account loss!

From here you can download the client version recommended by the Crew: 32-bit version:
Click here

64-bit version: Click here

Correct qBittorrent client configuration: Click here

Why am I displayed as unconnected? (And why should I change it as soon as possible?): Click here

Guide - How to make yourself connected: Click here
If, after reading the guide and making all attempts, you still cannot make yourself connected, then we remind you that in the Crew tab, in the Support section, there is a person dedicated to help in this matter.

TL.PL crew