I think that this has something to do with the recent update this thursday, it also made OSRS Mobile unaccesable / cant find it anymore from Google Play Store on Android, even though you have Android 5.01-8.01, as min. req. is 5.0+ and 1GB RAM. There has been made several topics about to the forums here, reddit etc, atleast one forum mod has replied that they'll look into it. I just hope it wont take several weeks to get this problem solved.
Thanks in advance to the team for solving this problem, waiting to see some solutuons! <3