Issues connecting mid game

So, every time im loading into a match of league right after everyone chooses a character, it takes me back to the main menu with the button "reconnect" in the middle of the screen. No matter how many times i try to reconnect it refuses to even get me past that button. I've tried completely uninstalling league from my computer but it refuses to let me connect. I didn't have this issue a few days ago but now i do. Haven't made any changes to my firewalls so any help would be much appreciated. I'ts already given me a warning for leaving matches so i tried doing training and not even that loads.