Website unexpectedly logging out Site Admin - can't do any site admin functions

This is a follow-up to the post from Annmarie Givans. (I can't see her post, but watched her write it.) I'm helping her troubleshoot issues with our Site Admin login. While logged in as Site Admin, if I try to access the Membership Management module, I get the following error message, as shown in the attached image:
"aloa.toastmastersclubs.org says***DATA TRANSFER ERROR***
Javascript Function=AJAXLoader[WhichVar=AllMembership]
Status=Data transfer FAILED.
Error=Logged Out

>>> YOU ARE NO LONGER LOGGED IN. PLEASE LOG IN AGAIN. <<<<

Please notify us about this at support.toastmastersclubs.org "
Beth May
A.L.O.A. Toastmasters, Club 7889364
7889364.toastmastersclubs.org  

The problem is who ever added the pictures to the site users the admin auth link for the picture.

I can fix it but it will take time.

see other post.