Problem with UBER Driver App

add

Hi Umipeople. i have a lot of problems with your smartphone. But here i only want to adress with this named issue.
i am a cabdriver in Berlin-Germany- I use MyTaxi, Blitzer.de, FMS (Local-Taxiapp) and also UBER. Every app is working without problems, but when i wanted to start UBER after starting the other Taxi-apps it wont start. It hangs on the startingpage, where UBERanimation is going to endlessloop.
I hten have to restart the phone or turn off the other taxiapps do a memoryclean and then if i have luck it starts. But after a while the app is turning itself into offline. I tried everyting, reinstalling it 3x, adding UBER-app to the background-whitelist. It was ok until the last update of UBER and also UMI Z system update.
I have also a Samsung S4 and there is not such a problem.

Please check it