Wrongful error: (my site) "is already assigned to an account and in use on another account."

Website URL

mayabeaming.com

Error Message

I have two domains on InfinityFree, both under my account. My main site is hosted on mayabeaming.site.je/ and is working fine. I want to make my second domain, mayabeaming.com, an alias/parked domain pointing to the same site, but when I try to add it I get the error:

“mayabeaming (dot com) is already assigned to an account and in use on another account.”

Both domains belong to me and they are listed on the same hosting account.

Is there any way to set this up without the wrongful error, or can Infinityfree support help reassign the domain so I can park it on my second account?

Thanks!