So I have two accounts that I want to post the same things to at the same time. One of them shows the option to add collaborators, and one does not, and I cannot tag the one without collaboration on the one with.

Both are public, professional, and have no tagging or commenting restrictions.

However, I just noticed that the one without the ability to add collaborators still has the "Post to multiple other accounts" options on it, which as far as I was aware was removed some time ago. So...are my two accounts somehow stuck on different versions of the app, even though they're being accessed from the same phone? How the heck could I resolve this? I've cleared the cache, deleted the app, logged everything out and back in, and still the same problem.