So my main domain is a us.com tld, so my main domain is like “box.domain.us.com” then I have my main admin email as admin@domain.us.com. I created alias emails like test@domain.us.com that forward to admin@domain.us.com
I realized too I can’t receive on the main admin account email, so I am thinking it isn’t an issue with alias but an issue receiving in general maybe? All of my items on the status page are good so I think all of my domain settings are correct.