Thank you :)) your website rules, love the foxbox music tool and screensaver game, seriously cool stuff
3dspaint.com is a WAYYY better site than mine, and it supports the 3ds even more, it even has a little community forming
its not too hard to optimize ur site for 3DS, you'll need to add the viewport meta tag + make sure ur width doesnt go too far, but otherwise it should work (essentially, imagine it as a mobile browser)
based on that, dc-blog I almost agree, but after checking, for some reason only the bottom screen is forcing the background in front of the other content
paint has many more images tho. I'd make sure that your HTML code is properly optimized and, if necessary, cut down on *large* images. If nothing works, then presume Neocities changed some SSL stuff that is now too new for the O3DS to handle, although I doubt that is the case as the 3DS browser still has new enough SSLs for the most part as of now