I have all the same issues. I didn’t change domains. I put the license in and it said success but failed as the error and then it didn’t appear to be successful. Many things do not work I do not know if it is because of the license issue.
When trying to view a product link I get 404 error. And I am unable to download plugins says forbidden.
This is a internal website not public facing.
Please let me know what I need to do to correct the issue.