Xbox One Can’t sign in after forced factory reset, can anyone help?

[SolarStarfish30]

So as the title says, my Xbox one factory reset itself after an update and at one point during the reset, it says that if I already have a Microsoft account, I can use that now to sign back in. But i don’t know what I’m supposed to do as it won’t accept anything but an email, phone no. etc and that just starts the setting up for a new account.

I read that a factory reset only wipes the device but everything is still on your Microsoft account. Is this true? If so does anyone know how to sign back in? Also I literally can’t click anything on my Xbox as it insists on me creating a new account so I’m stuck on the setting up options.