Problem of access to the launcher!

Hi, I have just discounted the leaverbuster after 5 games of 20 min. The problem is as follows: after finishing the game, I go back to the lobby to start a new match but an error message appears about loading the new game. In particular, on the "Find Game" button the 20-minute countdown of the leavebuster continued to appear when it was no longer worth it. I close the launcher and on its restart, after logging in, the game automatically opened a game with a black screen and then ticked an error message saying "there was a problem with your connection ...", I click on cancel but the game always keeps rebooting automatically with the same error message without me doing or touching anything. In short, after logging in I can no longer access the launcher's home screen because it always keeps opening an abnormal game (including the error msg) without me ever having started it before. I request immediate support, thank you!