Hello,
I had to factory reset my pc a few days ago and went to re-install vegas pro 21 from the Magix site. It asked for my serial number and said activation is successful,
but anytime I try to render any videos I get an error saying Activation Code is incorrect. Does anyone know how to fix this issue?
I would suggest creating a support ticket. This often is a problem with the email address assigned to the serial number. Sometimes this may get confused. The support team can help you sort that out. The chat may be in service right now as well if you go to https://www.vegascreativesoftware.com/us/support/