Can’t join Roblox group

Roblox username: Emilioplayz116
Discord: A10 Thunda#1159

I can’t join the Roblox gar group, every time I request to join it gets canceled. I don’t understand because I could join it a few weeks ago and I didn’t do anything wrong. I accidentally left the group so when I requested to join back I couldn’t. If you know why I can’t join back please tell me. An officer told me I had the wrong name, I don’t understand what he meant by that but every time I try to ask an officer they just ask me to wait. I have been waiting for 5 days straight requesting over and over. I am not in any KOS group or raiding group.