They're not the same design. Yes, I'm using my base but it's not like recolours and stuff. So sorry that they're similar. I don't even submit to this group extremely often so I'm not spamming it!
Also you are the only admin of this group, so it's actually your job to accept things, nobody else's. Your other groups might have other admins so that may be how things are getting in without you knowing. I'd rather you just deny the submissions instead of just leaving them unanswered. Not answering submissions will tick people off more. In the other groups that I submit to, I don't get any complaints.
If that's truly the case, I'll just stop submitting to the group and probably leave it since my art is not wanted here.