At about 0:25 CET, I was trying to load "the next unsolved puzzle."
It wouldnt load properly.

The Number bar just wouldnt load.

I have the banner of solved puzzles running on the bottom. That was slow to load, also

This issue was bothering me for a period of 5 mins or less.

Thanks for the report.

It looks like a temporary network issue at your end
(there was no unusual load on the server during that time).

Here the same problem on an iPad 5. No numeric keypad and the saved games (on my iPhone) don't load on my iPad.

I've seen some reports of problems with Safari.

(Chrome on Mac all fine, as far as I can tell)

The thing that seemed to fix it was to clear the browser cache
(Settings -> Safari -> Clear cache, or something similar).

Let me know if that fixes things.

The problem remains. I can send a few screenshots, if you tell me how. The progress bar below the web address is going halfway and the page load time below is not provided.

As a supplement: same issue in Chrome on iPad.

I'm seeing now it is related to the code for ads: some files that it loads from
remote servers take a long time (6-10 seconds) to load, or don't load at all.

I'll check with the company that provides the ads.

Thank you, I hope it gets resolved. This is bad for my ranking.

Looks like the problem is fixed, thanks!