Edit functions not working with Sub Domain redirect

I recently managed to redirect my domain name to my sub domain but am now having a problem with the editor in the subdomain.
I can’t perform functions like hyperlink, inserting forms, galleries etc via the editor and have to code it in via html. The editor still works fine in the main site but not the subdomain sites

The editor was working fine before I changed the subdomain from mistyhills.timeoutbookings.co.za to mistyhills.za.net

I have tried deactivating the editor plugins but the problem still persists. When I click on a function like hyperlink or insert form in the editor a blank screen appears.