I believe this has to do with the site, not the user.
You are correct, but.... have these guys tried to uninstall the app, the reinstall the app. Once you pay for it you can uninstall and reinstall as many times as you want. I use Tapatalk all the time (Galaxy S2-Ice Cream Sammich 4.0.3) on several forums and never get any errors. It may hang now and again.
So, I just bought a new Galaxy Note II the other day and saw that Tapatalk 4 was on sale on Google play for $0.99. Sweet, I'll upgrade from Tapatalk 2. What a sorry waste of $0.99, I quickly loaded V2 and have no problems. Sometimes it will load, other times it just sits and says "loading". I'm going to keep dickering with 4, but out of the gate dual thumbs down. I still have to sync it with my VWVortex account and my Dootalk.com account to see how they work. On my first login I got the API error, but haven't seen it again.
I have notifications are disabled because API is outdated... Can you make sure the forum is running the latest? Thanks
Sent from my Nexus 4 using Tapatalk 4