The list of people you’ve connected with or invited through the GroupMe app.
Sorry to hear you're having trouble.
I'm afraid that no one here would be able to help with this. The best I can suggest here would be to try and get in touch wth Groupme support to see if they're able to assist with this. https://support.microsoft.com/en-us/office/how-do-i-contact-groupme-customer-services-906e6ade-807e-46b3-ba6c-510cd01a0647