Thank you very much for your support!

We've checked to find that your Pro account has been expired on Aug 1st. Sorry we haven't had a notification for you. Please renew now.
Maybe you have already paid via Google play, then tell us with the screenshot of your payment and we'll update manually for you since there is a bug in the auto-update at present if you pay via Google.
Look forward to your reply.

Have a good day!