In case you haven't tried it yet: uninstall WU, delete WU config files and database, shut down the Jolla, take of the battery for 15 mins. Then put the battery back, start Jolla and install WU. If it doesn't work, power off, take of battery again for 15 mins. Then start Jolla again. This worked for me a couple of times after WA ban with the earlier versions of WU. Good luck!