The Productivity Bundle is “Unavailable” at the moment. Your post advising waiting a few hours is now 2 hours old.
BTW, if and when you update the iPhone variant of OmniFocus 2 for parity with the other platforms, I really hope it’s a free update. Your software is good, but these very large costs on each platform are a bit much.
For those to whom the update is saying unavailable: I was able to install by deleting the app from my iPad and downloading again from the store (fresh as opposed to update).
I hope that’s not the solution as I would lose all the data. I don’t have cloud sync. I already backed up and erased the iPad yesterday when this first happened, in hopes that would fix it. I know it’s not all omnis fault, but between this and the previous error, I’m not being able to acces all the project information I had already in the app and need.