I upgraded, but still received an email that I've reached my form limit

I upgraded, and received confirmation of payment. But I just received an email that I've reached my form limit. Can you please help me know why?

Hello Colbeys,

Thank you for upgrading your subscription with us.  I checked your account and saw the overlimit error. I presume that it had something to do with your account before you have upgraded.  With this I have also fixed the error. You may disregard the email notice.

If you have further questions, please do let us know.

Thanks.