Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi JC N!
I am Shakiru, an independent advisor and a user like you, and I am glad to be helping you out today.
I'm sorry to hear that you're having trouble signing in to set up an E5 subscription.
Perhaps this may be a temporary glitch try again after a few hours. Also, you can try using a different browser.
If that does not work, the next step, I will recommend is to contact the Microsoft support team again via https://support.microsoft.com/contactus, as they have access to your account and will be in the best position to help.
Please note that this forum is user-to-user support.
Best Regards, Shakiru