Re: the EA installer app says that I
I'm having the same issue. I can't connect Game Pass to EA Desktop/Play so wanted to uninstall and reinstall to try again. The built in uninstaller didn't work (it would crash at the end leaving a partial non-working install left over).
I ended up uninstalling using Bulk Crap Uninstaller, including 'leftover' files and have since used CCleaner and specifically deleted the registry entry mentioned in the link above. This has not worked.
Now my flow is: Click EA game on Xbox app, Xbox app tells me I need to install EA Desktop, click install and see the attached, click 'Launch EA Desktop', it opens system32 folder in Windows Explorer...
Really need help with this.