I recently purchased your Tier 3 subscription and was expecting to have access to the custom domain and subdomain functionality, as this feature is advertised as part of the Tier 3 plan.

However, I am currently unable to locate or access the option to add a custom domain or subdomain. Could you please clarify whether this is due to a temporary bug, a recent update, or if there are additional steps required to enable this feature?

I would appreciate your prompt assistance in resolving this matter, as I was looking forward to utilizing this capability.

Thank you for your support.