The selected custom domain is already in use on relark.com. Please remove the custom domain from your account at relark.com before you can host it on InfinityFree.
Other Information
Cannot add this domain in the cpanel but checking in the domain checker option it shows"The domain is not assigned to an InfinityFree account. Please add the domain to a hosting account to show a website on it."
I have no idea how the account was registered there on the name of my domain. Is it possible for someone else to do that. I have requested them to cancel the reseller hosting account .