Thanks for reaching out, I’m sorry to hear about the issues reaching your site!
It sounds like you’ll need to change your site’s URL back to the old one so you can get access back. Then, you’ll need to make sure that the DNS for mattymoosestore.com is pointing to the correct IP address.
First step- getting your site back to its original URL. We have a guide here for performing the change back in Cloud WordPress. For you, the steps will be a little different, but you’ll be able to access your cPanel phpMyAdmin Database management tool, and then follow the steps in the guide starting at step 3. InMotion Hosting also has instructions you can follow here.
Now for the second step, pointing your DNS for mattymoosestore.com back to the right IP address. Right now, that domain is using a CDN called Akamai. You’ll need to log into your CDN dashboard and make sure that the settings are pointing to your hosting at InMotion Hosting. From what I can tell, you’ll need to make sure it goes back to the IP address 18.104.22.168.
Finally, once the DNS is pointing correctly, you can update the Site’s URL back to mattymoosestore.com. You may also need to use a plugin like Better Search Replace to make sure that all of your links are updated to the new domain name.