Interesting.. ^ lol
Ok, The above is true, but if you view the top level forum of the Sponsor section (The S4GRU Club) in the categories listing of the Forum tab, like so...
Then click and hold on "The S4GRU Club" selection until the pop up comes up.
Select Subscribe.
The section now has a star at the lower right of it.
If you click on the Favorites tab, you will now see The S4GRU listing.
If you click on that, all the hidden sections of the Sponsors area is now listed.
So if you click on any one of them, the threads show up.
Except (you knew that was coming), the S4GRU Contributing Authors Forum. When clicking on that to see the threads, I do get the Protected Forum message.
So either that is the culprit of our woes, or even I as a moderator cannot access that section.
Of course all of this is only a temporary solution to viewing the sponsor forum, and Tapatalk may need to investigate the issue and push out a fix. At least this way, one has a faster access to that section by using your Favorites.
TS out