Urgent Help: To restore the administrator user role from author

I have mistakenly updated my wordpress website\'s administrator user profile to author. Could you please help me to revert my action? Now admin is working but has very limited access.

I have installed the two plugins:

users role editor

controlled admin access

I have tried by logging in to the cpanel and removing these two plugins and restore the same from previous backup. But nothing happened. Probably, now you could help me to fix this issue. I shall be very thankful to you.