Windows 10: Only account but revert build says to remove it

So i have installed the Fall Creators Update and when i am trying to go back to the previous build because of issues. Windows made a new user account for me and it says to remove it but it is the only account and my old account is unaccessible. Please help thanks!

:)

 

Creator Update problem

I am trying to roll back but is saying to remove accounts created after installing the build. Now, my Microsoft account is the only account that i created. It also happens to be my administrator account and it cannot be removed (I tried). I created a local
account and deleted the MS account, but now it says to delete the local account (which now became the admin account). What should i do?

 

When I try to remove an e mail account it only comes up sync and not delete

I am trying to remove an e mail account:

Have pressed settings
E mail accounts
Tapped and hold on account I wish to remove
Instead of coming up "delete" it only comes up synch
How do I delete