Changing the Admin on Free ToastHost site

I am the new VP PR for our club and am trying to change the administrator for our site to myself. When I enter my member id number it doesn't recognize the number. How can I get the administrator changed. No one seems to remember who the last admin was or what the password was for the site.

Here is the documentation on how to change the administrator:

support.toastmastersclubs.org/doc/item/w...-no-longer-available