Having me be able to use a custom email domain for my account is cool, however, limiting what I can do with the domain that I PAID FOR, is entirely overstepping boundaries. I should be able to create a new email under my account using my custom domain, and then be able to create an entirely separate proton account using that email with my custom domain. Just because a domain is tied to one proton account should not stop it from being able to create other proton accounts, all this is making me do is consider not using proton to manage my email and cancel my visionary subscription.

ADDITIONALLY, what is the point of aliases if I cannot use them to do the same thing? If I have a domain I registered solely for the purpose of making aliases for it, stopping me from making free proton accounts with the domain I bought with my own money is also insane.

And when I say "proton accounts" I don't mean 15, or 50, or 500; I mean like 5, tops. I want a work@domain.com account I can use to separate my work passwords from my personal passwords as I don't want all of my passwords being logged in at work; but I also don't want to waste a paid sub-user slot just for something that can be accomplished with a free tier account. This is also entirely solvable by just letting us create free-tier sub users under the main account that has the domain tied to it.

And no, this suggestion: https://protonmail.uservoice.com/forums/935538-accounts-payments/suggestions/12484953-access-the-same-custom-domain-from-multiple-proton, is not solving the problem I am suggesting a fix for.