Can't Login Even After Multiple Repairs

Hey, so at first I wasn't able to play due to the "Maestro Error" but I was able to get past it for a few games by running the League client as Admin. It would run normally and let me login fine without problems but it seems shortly after 6.2 released, problems occurred. Now, I can't login after inputting my login and pw. It's all correct and does the click animation sound but continuously tells me "Logging in...". Any ideas on how to resolve even after repairing client along with uninstalling and then installing?