I need to paid $40 for one month because my chatgpt plus account suddenly downgrade to basic account

[raven coyote]

** Steps to reproduce**

1. I was a happy Plus user, my Master card has been successfully charged for Plus subscription today afternoon. And suddenly I discover that I was downgraded to Free, without any reason or notice.
2. I click the subscribe button, and then I paid for the same period that mean I paid $40 for one month

Expected result
I should allowed to use Chatgpt Plus account

Actual result
I am still using the Free account until I pay again

**Additional Information **
Account: [e-mail]