I just downloaded wemod to get cheats for ghost recon breakpoint, I replaced the files that it asked me to and installed the trainer. In the launcher, it tells me to press the play button above to get started, so I press it, but then it just sits buffering. I’ve left it for a total of 3 hours and nothing has happened. I restarted my pc and it also hasn’t helped.
Hello and welcome to the WeMod community. 
First of all, please make sure that WeMod is added as an exception in your antivirus and firewall. The most common cause of trainers not working is interference from antiviruses.
When you’ve done that, launch the game first without WeMod. Once on the main menu alt+tab to WeMod then press play and Alt+tab back to the game.
Let us know if anything changes.