For 1 month, Android app shows an empty screen after login. When I looked to Google Play page of SAP Concur, there are too many compliant comments about exactly the same problem. I live in Turkey and I don't know if this problem occurs only for Turkish users. Apple version works fine by the way.
Are you still getting this issue? In case, I suggest that you open a Support ticket to have this further investigated by our Support Engineers from the mobile Team. You can reach out to your Concur Adminnistrators to open a case on your behalf. Kindly include on the case:
Type of device used:
Device OS version:
Concur app version installed: