URGENT: Membership causing redirect loop AND locked my out of my admin role


I have two serious, urgent matters I need your kind help with:

1. I was in Membership users page and I added myself to a Subscription level. I am the admin, by the way. As soon as I did that, all my WP Admin links disappeared, except what a normal Subscriber would see. That means I cannot access Plugins, etc etc. Which means I cannot admin my site! Pls help.

2. Even before the above happened, we were experiencing a lot of pages that were not protected yet would redirect to the http://www.chamabox.co.ke/protected/ page and cause an infinite redirect loop to that page. We have investigated everything and it seems it is Membership causing that problem. How do I resolve this?