Does anyone same happening with me?
After I succeed log in on Uplay, i clicked "play" on breakpoint game.
After a while, it came back to game page screen just like nothing happened.
Stomp has one way- the more direct way is usually turning uplay off, going to the ubisoft folder, then into game launcher folder, then delete the cache folder and restart uplay.
Both should remedy your problem but it’s good to have options since you will probably go through this 3-5 times per week.