Kimsan, Unless I'm mistaken, it sounds like you're trying to gain access to the online forum via clicking a link in the e-mail digest. I really can't speak to that since I stopped getting the e-mail digests long ago. Since the original poster mentioned "continue access to the site" that makes me think that he is accessing everything through the forums website, not the digest.
From earlier threads, I think that if your sole access has been via the e-mail digest before the advent of the forums website, you will have to set up a password for the website when you first attempt to access it. I cannot say exactly what's going to pop-up on your first login attempt since it's been too long since I did mine. That being said, I'm going to attempt to step-by-step you to logging in to the site to find the options I've spoken of:Enter https://groups.io/login in your web browser of choice (or click on the link in this step).On the login page, enter your e-mail ID and password or use one of the link "buttons" at the bottom of the screen to have yourself sent a login link or sign in with Facebook or Google.Once logged in, you will be presented with the Groups page, in my case the only group is jfw, and I click on the link that's right next to the checkbox for the group to be taken directly to the jfw main groups page.On the jfw main groups page you have a menu of sorts down the left side of the screen with its choices labeled:Home MessagesPostPollWikiHangoutSubscriptionThat same menu is carried over if you go to the Messages page, which is where I spend pretty much all of my time. Selecting the Subscription option from whatever page you are on leads to the page that shows the group e-mail address, date you subscribed, and the e-mail options followed by the radio buttons to select your preferred option, and a "Save" or "Unsubscribe" button at the very bottom. Brian
