[NEED HUGE HELP] Facebook won't let me change my verified page URL (username)

Hey everyone, what's up

To keep it short: I own a musician page that it's often mistaken by another band with the exactly same name (but has one letter added to the name), so I keep getting messages and Idea from their fans.

Fortunately, I was plaing on a change soon, because the name is quite common, so it won't really rank well on the searches. So I reserved all the social medias and plaing on changing them soon. BUT, seems like I've already changed sometime in the past the useame of my page and facebook won't let me choose another one (see pictures)

Also, I tried creating another page with my new alias and merge those two but facebook won't let me due to the fact that one is verified and the other isn't. Is there any work around this issue? I really want to change my alias on all social medias, and especially on facebook along with the useame (url).

Any forms, or e-mails that I could submit this issue to would be appreciated! (I already tried a few from their ads support team, report a page issue and facebook mentions support, but to no avail so far.). Help would be highly appreciated and eventually compensated.

Thank you in advance BHW members, hope to solve this issue as soon as possible.

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