Yes, that's correct unfortunately. I added a notice in the Classifieds explaining this, but maybe that notice is also not visible in Tapatalk?
Here's another thread on it:
https://classicbroncos.com/forums/threads/tapatalk.313671/
Basically, until Tapatalk fixes the issue you won't be able to create a new classified ad using Tapatalk. You'll need to create it on the computer, then if you want to use Tapatalk to add photos, do that by editing the post in Tapatalk (or adding a reply to your own thread)
I'm sorry about this, but this is really something Tapatalk should have fixed years ago. In the new forum software the City and Location are not custom features. They are standard, out of the box functionality and have been for a couple of years now. But Tapatalk hasn't updated their plugin for a long time. They have been aware of the issue for some time and keep saying it's on their list to fix.