I repeat:
If you can sufficiently prove you own the domain name, I can remove the domain from the old account. But I really have no idea what you have setup because the instructions I wrote back then were a one time action for a specific user.
If you say you can prove the domain is yours, then please present that proof. Just saying “I followed the instructions from some post” doesn’t cut it if I don’t know which post or which instructions you’re referring to. CNAME records are a viable way to check domain ownership, but I really have no idea what you set up.
Are you referring to this topic? The selected custom domain is already in use on InfinityFree - #9 by ImadKhan
If I remember correctly, the deciding factor there was that the domain registration was never than the domain assignment, which sufficiently proved the domain was expired and re-registered by someone else. That’s not the case here, so that topic doesn’t apply.