Official ACT Online Prep

Does anyone know if the questions from the Online Prep (the one that you can buy when registering for the ACT) are actually created by ACT? I know you should only practice with OFFICIAL prep material and don’t want to be using others that won’t reflect what the actual test would be like.

I’ve seen a few mistakes in some of the questions as well as a lot of controversies over some questions, so I’m starting to doubt whether or not the questions were actually created by ACT. Also, the platform looks awfully similar to McGraw Hill and some people say they use their questions.

I’ve read a few posts about this, but all of them have closed, so any thoughts?