Revit 2021 Activation Processing Error

[KarimTayel]

Hi when i try to activate this message pop up

Thanks for initiating your product activation. The system encountered a problem registering or activating your product. Please submit your registration information to us in a Customer Service request and an Autodesk representative will contact you.

[mdavis22569]

Do you have a serial number ?

If so:

https://knowledge.autodesk.com/search-result/caas/sfdcarticles/sfdcarticles/Error-Thanks-for-initiat...