I figured out the problem and thought I would update this in case anybody else has the same problem. I installed Threads on my iPad but don't have Instagram in

I figured out the problem and thought I would update this in case anybody else has the same problem. I installed Threads on my iPad but don't have Instagram installed there (Instagram is on my phone). Threads needs to be on the same device as Instagram. I was expecting to be able to log in with my Instagram credentials, not log in with the Instagram app.