Trying to join up but the email address they say to use isn't valid according to my email provider. Any suggestions?
You need to email Ted at Eaton Balancing. He screens new members, a low tech spam control for the site. Might take a day depending on his workload. https://www.eatonbalancing.com/2001/03/20/contact-us/
like an earlier post if you contact https://www.eatonbalancing.com/2001/03/20/contact-us/ If you need advice, comment, or ask a question, or want to become a member, contact Ted. It is certainly better than AI or asking randomly on FB, which will give you random comments of potentially bad advice.