Dear Plarium, 

since this afternoon, I am as well as my whole league and most of my friends are having massive problems to properly log in, if one of us is finally able to log in, after numerous attempts, after a couple of minutes the game prompts a message, that it has to reload, due to whatever error which had occurred in the background and then the whole issue happens again. 

Please fix it asap and no clearing the game cache is not working, nor uninstalling and reinstalling the game is fixing the problem. This happens on as it seems 99% on Android Phones and Tablets, apple seems to have less issues.