When I open up the WoW Companion App everything works fine until I get to the character select screen. I select my character, it thinks for a moment, and then tells me the account is already logged in. The only place I log into my account is on my computer, which was shut down at various points during the day when I tried, and I only have the Companion app on my phone. I uninstalled and reinstalled the app, and I still get the same message. It was working just fine yesterday, but today I have problems. I have a Samsung Galaxy A51, and my carrier is Verizon.
That happened to me the first time I tried to use the Android app. So I shut down the app. Logged on to the PC client. Then I logged on using the Android app, got the already logged on message. Exited the app. Logged off the PC client. Logged back on using the Android app and it worked fine.