Save as to OneDrive not working as expected.

Hi I have followed the steps in the instructions https://helpx.adobe.com/uk/acrobat/using/access-onedrive-files.html. I use my user credentials to log in, it tells me I need to be a golbal admin, I log in as global admin, At step 5 I tick the box to agree for the whole organisation (logged in as admin at this point) and it creates an account for the admin. I click Home and remove the account admin and then re-enter my user credentials and I am promted again to log in as global admin. I log in as global admin and same tihng happens. im stuck in a loop. Help.