problem with a redirect loop

seems with the membership plugin we sometimes get into a state where the site will get into a redirect loop. Unable to browse site http://12-1.ohiocvma.org but we can still log into the admin http://12-1.ohiocvma.org/wp-admin

we can not login using /wp-login

when going to the root of the site we get a message in our browser that says

Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

I was in live support and they suggested that we open a ticket. Can you help?