Why have I reached Import Limit when I paid for Premium a couple days ago?

I tried a graded lesson, and when I reached chapter 2, I got a message, " Lesson Imports Limit Exceeded.

Oops! It looks like this import exceeds your import limit. Upgrade Now to get unlimited imports!"

But I just paid over $100 for a year of Premium a few days ago. I was logged in. Can someone explain this limit? I think it must be a mistake, and I can’t find where to contact the management, so I am posting here. Thank You to anyone who helps me.

That sounds like a bug, sorry about that. We will look into this asap.