Syntax error in domain, to many dots

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How to Add Subdomain-Level Custom Domains to InfinityFree Free Hosting

Hi, I tried to add a subdomain-level custom domain (e.g., domain.gg.fun) to InfinityFree. It successfully verified ownership. However, when I attempted to add the domain, I received this error: “The hosting platform returned an error message while trying to process your request. Please try again or try making the change through the control panel. The error returned is: Syntax error in domain, too many dots.” I understand that subdomain-level domains have more than one dot (like sub.example.c…