I noticed once a mistake when installing the application on the Nokia Lumia 530 (RM-1017):
There is a problem completing your request.
Please try again later.
Error code: 80070020
The reason for the error was the wrong date and time, before this error on the phone the battery was removed and they dropped.
So I manually specified the date and time in “Settings” – “Date+Time”, after which the error no longer appeared.