I do not know why the following happens on your news site, it doesn’t happen on other papers I log into but might it be time to remind your readers.
I have been using Firefox for quite some time and never had any problems logging onto the Bulldog. My Firefox stopped working so I switched to Chrome. When I logged in today I got yesterday’s articles. Then I tried Edge and all was fine because I got today’s editorials.
Then I remembered something you had posted, sometime ago, about clearing caches. I cleared the cache in Chrome and voila – all is okay.
I never had to clear the cache in Firefox, I did not clear the cache in Edge but for whatever reason I had to clear the cache in Chrome.