So...
(all relevant for Android Mobile devices. Issues do not happen on Windows PC)
I have fired up stock browser.... I never use stock browser. It was the first time run, asking me for all the initial permissions... Result: Same thing as my OP. Screenshots attached.
Then, I installed Firefox. FF had never been installed on this device. I was able to get 3 day new Posts, but not 1-day or 7-day, or All-new-posts. This was on first-ever-first-run Firefox Mobile run. On Chrome, no matches were coming on all new post options, 1-day, 3-day, 7-day, all-new. Same happening on stock browser. Screenshot video will be posted shortly.
Another discovery made:
On stock browser, after clicking all new posts, and clicking the link on the "here" word, shows all past 24 hour posts made, then 1-day, 3-day, 7-day link work. That's on stock browser. After I log out and log back in, have to follow the same cumbersome process or else 1-day, 3-day, 7-day links do no work. On freshly installed Firefox that I mentioned, even if I do this process, I still only can get 3-day posts, but no 1-day and 7-day posts. On Chrome, even following the process through the "here" link, does not bring any results on 1-day, 3-day, 7-day.
P.S. The site is overloaded with adds... I am waiting my 360 hours period to unlock bootloader so I can root the phone and get rid of those adds on the bottom of the page... so annoying.