Verifying users who can't click their verification email

I received this reply from my user who could not click the verification email:

“Joakin Bang Larsen, I’m delighted to share these things, and tried twice in my e-mails which got rejected by that site. The browsers are likely the main issue (I tried two on the site for that confirmation e-mail), but I’ll quickly cover the rest, too. I use a Pentium 4 (786) at 2.0 GHz, 256 M RAM, Slackware Linux 10, with elinks 0.11.5 and links 2.1pre28 as my main browsers. Note that elinks has ecmascript, while the links is the last release of which I know to support some Javascript. I have an ISP connection through ATT Uverse, which acts like my previous DSL as far as I can tell, but faster. I read mail online at my ISP using their Pine e-mail reader, which calls Lynx 2.8.x (I’m not sure of the exact version) to follow URL’s in an e-mail. When I received the confirmation e-mail (having been notified by e-mail of the username and password under which I had been registered), I tried following the link in Pine, which called lynx and got me to the site. When I reached the webpage, I saw a menu item: “Submit” with the text “Click here to activate your account.” When I moved the cursor to “Submit” and pressed [Enter] to click this item, I got the message (which I’m reading as I replicate the action): “**Bad HTML!! No form action defined. **” Apart from that message, nothing happened when I tried to activate that button or whatever. Then I decided to try manually entering the URL from that confirmation e-mail into elinks, hoping that maybe ecmascript support might make a difference. Accurately typing the arbitrary string of characters (presumably used to identify me as a user in confirming my registration) took a bit of time, but wasn’t too difficult when I typed groups of about five characters at a time. This got me to the site, and the same page with that confirmation button I had seen with lynx on my ISP. However, when I tried again after moving the cursor to that “Submit” button or whatever to click it by pressing [Enter], there was no result. I recall that maybe elinks showed it as a “Harmless Button” – which often means that something calling for Javascript won’t operate in elinks, I might guess. Anyone, that’s what happened – no problem getting on the site with lynx (called from Pine on my ISP) or elinks (on my own system, with the confirmation e-mail URL entered manually) – but no success with that “Submit” button.”