I am Sebi from the Editor X Product Team.
Thank you for sharing your experience with our team, we apologize for the difficulites you are experiencing.
It is very unlikely that the issues were caused by connecting a domain to your site. In order for us to properly investigate we will need to have your website address.
If you don’t feel comfortable with sharing it here, then please send it via the “Help & Feedback” bug form in the top bar of the Editor.
Once we have more information we should be able to investigate.
Thanks,