Custom domain already in use but not attached to any of my accounts

Website URL

zero4host.online

Error Message

Hello,

I recently purchased the domain “zero4host.online” and I’m trying to add it to my InfinityFree account. However, I get the following error:

“The selected custom domain is already in use on InfinityFree.”

I checked all of my InfinityFree accounts and the domain is not attached to any of them. Could you please remove the old association or help me verify ownership so I can use my domain?

Thank you.