Please try these:
- Settings > Screen Time > [Child] > Content & Privacy Restrictions > Content Restrictions > Web Content Make sure it’s set to Unrestricted Access.
If it must stay on “Limit Adult Websites,” add these to Always Allow
- groupme.com
- api.groupme.com
If it must stay on “Limit Adult Websites,” add these to Always Allow.
2. In the same Screen Time area Check Privacy settings like Web Tracking or Account Changes and make sure they aren’t set to “Don’t Allow.” GroupMe uses a small web login flow, and those settings can quietly stop it from working.
If you can, the quickest test is to temporarily turn off Content & Privacy Restrictions, try logging in, and then turn them back on. That usually confirms the cause immediately.
More info here https://support.microsoft.com/en-us/groupme
What exact error message pops up on her phone when she tries to log in?