I understand that, but like I said, there are plenty of groups here that allow gen art. Not submitting here isn't that much of a problem, as the group is barely active anymore. And to be fair, if the art is focused on Romione, their friends or other people can be included! The rule is the stuff that shows them as friends and with other people aren't allowed.
When I first read your comment I thought it was because you had submitted a fanart about the trio as friends or something like that. Then I saw yours was the one with Scorpius. I rejected it as a knee reaction mostly, because I despise the Cursed Child, but I suppose you can resubmit it and I'll accept it.