The archive version sometimes doesn't work. What can be the problem in this case? I sometimes receive the 401 error and don't know why. Maybe the problem is in VPN I'm usually using? I had almost the same problem on my own project with online documentation search engines and URLs. Some of them simply didn't work for no reason, so I decided to use another software for it. I've found at https://clickhelp.com/online-software-documentation-tool/ some interesting and helpful tools that helped me to fix these problems. I haven't noticed anything suspicious yet, so I hope this stuff with wrong urls won't be a problem anymore.