I originally got an iphone 11 (since has been updated to be 15, I think).
To check whether the version of iOS might be the problem, I charged up my iPad 2, which runs iOS 9.3.5. Since the iPhone 11 starts with iOS 13 and supports up to iOS 17.4, it is well ahead of my old iPad in what it supports. Using the iPad 2, I tested whether I could reach the site with Safari, Chrome, Opera Mini, Dolphin, and Edge. I could reach it with all of them except Dolphin. In case it was something on the page, I also tried the Ralph Betza page, the hi page, my personal website, and my blog. Of these, only the blog worked. I suspect there is an issue with the DNS server it uses to resolve domain names, though I found no way to change it. When I entered the server's IP address into Dolphin, it did go to the Chess Variant Pages homepage. The only issues with the other browsers were that they didn't recognize this site's HTTPS and required me to confirm that I wanted to see the site, and Dark mode didn't work.
To check whether the version of iOS might be the problem, I charged up my iPad 2, which runs iOS 9.3.5. Since the iPhone 11 starts with iOS 13 and supports up to iOS 17.4, it is well ahead of my old iPad in what it supports. Using the iPad 2, I tested whether I could reach the site with Safari, Chrome, Opera Mini, Dolphin, and Edge. I could reach it with all of them except Dolphin. In case it was something on the page, I also tried the Ralph Betza page, the hi page, my personal website, and my blog. Of these, only the blog worked. I suspect there is an issue with the DNS server it uses to resolve domain names, though I found no way to change it. When I entered the server's IP address into Dolphin, it did go to the Chess Variant Pages homepage. The only issues with the other browsers were that they didn't recognize this site's HTTPS and required me to confirm that I wanted to see the site, and Dark mode didn't work.