Hey, @TINEVEZ Yves219766882cxs. Welcome to the Photoshop Community. Have you recently updated Photoshop or the operating system?
I've checked your subscription, and I found your active subscription. Please share specific details like screenshots, & video recordings of the error. The information is too limited for me to help you at this stage.
As a primary step, check if you're logged in to Creative Cloud with the correct email account.
Let me know how it goes. Thanks!
Sameer K
(Type '@' and type my name to mention me when you reply)