Trouble with setting up myTrailhead

Hello I am trying to complete this:

https://trailhead.salesforce.com/en/content/learn/modules/mytrailhead-configuration/implement-your-companys-brand-and-add-users?trail_id=create-learning-experiences-with-mytrailhead

I have given the right permissions with the permission set license to the user but still it won't log me in to  https://trailhead.salesforce.com/en/subdomain. This is what I get.