Domain stuck – cannot add after 72 hours

The domain does not appear to be in use as far as I can tell. That error message looks like a control panel error. I think it says more than what you’ve shared here, and this part might be a bit misleading. Could you perhaps try to add the domain to the client area instead? The process is a bit more streamlined there with better feedback. If that doesn’t work, could you please share a screenshot of the error page?