Exactly what the title says; I can only make characters that don't share a name with this account.

Anybody know why that might be?

Or better yet, a way to fix it?

Also for clarification, I have tried the usual rigmarole of "workarounds", those being:
-Uninstall/Reinstall the game (did it twice with the second deleting any previous saves I had)
-Allowed it through Windows Defender (Don't have a particular antivirus that would block it)
-Allowed it thorugh the Windows Firewall (All associated executables)
-Made all versions (TQ, TQDX11, etc) "Run As Administrator"
-Even tried making the character in a lower resolution (Not sure why this would've worked, but someone mentioned it in a different post with a similar issue)

Any and all help would be greatly appreciated, thank you for reading!