We are having a problem with a post that has just under 5000 comments. Suddenly, with nothing changed on the site, the ability to comment disappeared, as did the sidebar widgets and the dashboard bar that shows up at the top when I'm logged in. Every now and then it will go back to normal and work fine, then back to not working.
It's only on this ONE page, all other are just fine. I'm freaking out as we are doing a big giveaway with a major brand and this is not good, as people can't enter - which makes for angry readers and an unhappy brand sponsor.
All other pages on the site are completely fine. We did not change, tweak or do anything. It randomly will start working again, than go down again. We've pulled off as many plugins as possible, my husband spent half the night going through code, and we can't figure it out.
Hoping someone can give us both some advice asap! Any help would be immensely appreciated.
So desperate for help - any advice or suggestions would be greatly appreciated.