Hi there!
I created a site on a subdomain. Then I made a backup by Aceeba Backup and transferred the site to the domain. In SP PageBuilder, I lost some elements (see screenshot).
https://drive.google.com/file/d/1snCPXCZKNxaqE-wG9vziFlGnFK9gLJFa/view?usp=sharing
And another problem - I can not save my addon