Can’t Change Members Level or Activate Account

Hi,

1. A member of my site has a Tier 2 membership. I want to downgrade it to a FREE membership in the backend but every time I change it and save it, it simply reverts back to Tier 2.

2. There is a notification saying: “This user account registration is not complete yet. The member needs to click on the unique registration completion link (sent to their email) and complete the registration by choosing a username and password.”

The user didn’t receive or can’t find the original message and never set a password during initial setup. I used TOOLS to generate a new link. Clicking that link simply took the user to a “This page can not be found” page.

A little background.
The member bought their membership through WooCommerce with a coupon so fortunately no money is at risk here either way but for future clients I’d like to avoid having any similar issues. (I’m using the Simple WP-Membership Woo Commerce Add On).

Any and all feedback or ideas are welcome.

Thank you.

The page I need help with: [log in to see the link]