I downloaded an update for GR Breakpoint a few days ago and my trainer has stopped working. Reinstalled the launcher and still cant connect to servers. Any clue for a fix for this?
Welcome to the community and thank you for being Pro. 
Since the game recently received an update then the trainer will also be in need of an update.
The game developers seem to have released a hotfix shortly after the trainer was updated.
Please make sure you look in the official threads for the trainer, as this information is usually already there. See here: Ghost Recon Breakpoint Cheats and Trainer for Uplay.
And also if your using the trainer should not be trying to connect to any servers as these are for singleplayer use only