Here is a guideline written by WordPress about moving your site.
In respect to Event Espresso, once the site is moved, please remove the licence key from the old site and add it to the new site. Please then request a licence reset so you can get the automatic updates on the correct site.
The support post ‘Change of subdomain / domain’ is closed to new replies.
Have a question about this support post? Create a new support post in our support forums and include a link to this existing support post so we can help you.
Support forum for Event Espresso 3 and Event Espresso 4.