The emailed link

Sign in or join takes you to MemberSpark. Pick the emailed link there, and MemberSpark emails a link to the address on your account. Tap it and you are in. It works once, and it goes only to that address — nobody can ask for your link to be sent anywhere else.

If it expires

A link stops working 15 minutes after it is sent. Ask MemberSpark for a new one, the same way. Asking again is always fine, and the new link replaces the old one.

Never arrives

Look in your spam folder first. Then check the address was typed the way you meant it. Then ask for a new link. If links still do not reach you, tell us through Feedback and name the address you used.