Same issue I am facing. Showing me error as (You must log in to access the admin area.)
I just changed in General setting Site URL and after save the setting I got this error. I am not able to see website also. (This page isn’t workingmyrevital.com redirected you too many times. Try clearing your cookies. ERR_TOO_MANY_REDIRECTS)
Please help me to resolve this. It is very urgent.
Thanks in advance.