Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Guys i have had the same issue, the quickest way to resolve this right now which worked for me was;
i followed this step, suggested by a user here and it worked for me.
"I have fixed this, but the trial version WONT work, you have to get a sales rep to create you a purchase order link and then it works after that, sucks to pay month 1 but it is what it is, good luck https://www.microsoft.com/en-gb/microsoft-365/business/sales-support#". Once you get to this page you'd need to open a chat with a business sale rep and state the issue and they will give you a link that you'd use to pay directly for the item.
they'll request for your full name, phone number and email address to create the link for you.
Hope this helps someone else as it has help me.