[Solved] Why Gold subscription has gone from my account?

Hi. Now I’m a little upset about the subscription of my account.
I have purchased The No-Code GameDev Bundle from Humble Bundle and activated 6-Month Gold pass to my account. Then I was glad that I could add more than 3 leaderboards to my game.
but now, a couple of days past, I realized my subscription stopped and back to Free plan, maybe just after the update.
The pass code that I got is no longer available because it works just once.
I want to know why this happened, and how can I get back to Gold?

thanks.

my account name is aburana.
oook is just for the forum.
(I couldn’t login to the forum so I made another one)

Hello,
Please reach the support at
billing@gdevelop.io

Have a good day
Bouh