Hosted microblog has expired

Hello. Just now I tried to make a post and received the following message in response:

I checked my premium subscription and everything seems to be ok:

What could be going on?

Sorry, I’ve fixed this for your account. We’ve seen a number of these errors and I’m trying to track down the root cause. It has something to do with the pricing changes we made recently.

Thanks! You should be able to post again.

Thank you, @manton! It’s working fine now.