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Kim-Mai Nguyen 5Kim-Mai Nguyen 5 

login to playground

I acdidentially changed my domain on my Trailhead Playground and now unable to access my TP.  I have a lot of trails and work that I saved in it and would like to continue using my orginal TP.  Can you reset my domain so I can access it again?  Thanks!
Rahul KumarRahul Kumar (Salesforce Developers) 
Hi Kim-Mai,
  • Did you get your activation email? Look for an email with a subject like, “Salesforce domain ready for testing.” Now let’s finish setting up your subdomain and rolling it out to your users.
  • From the email, click the link to get back to the My Domain wizard. It takes you to your Salesforce Org. Notice the URL in the browser address bar shows your new subdomain name.
  • Please check the below screenshot. User-added image
  • https://trailhead.salesforce.com/en/modules/identity_login/units/identity_login_my_domain
hope it helps.

Please mark it as best answer if the information is informative.so that question is removed from an unanswered question and appear as a proper solution.

Thanks
Rahul Kumar