OK. I think when I connected the router, I used the existing yellow cable, but I have something here that’s yellow that looks like the pictures. It’s wjat came with the router, I think.

Interestingly, the dinosaur has been absent today, except just now for a second, and then the page loaded properly. It’s appeared a couple of times in the last few minutes, just a second before loading a page properly.

Well, I just switched the cables. The old one looks undamaged to me. I really should reboot, I think. Can’t hurt. Turned the router off and on, of course, when I changed the cable.