As for the people wondering, no we sadly are not able to get any topics back from the last three months, WHAT you could try and do is use the 'web archive', it's a public tool that regularly makes a 'backup' of the forum, a sort of snapshot, most information could be gathered from there if it was public.
As for the people wondering why there was a lack of backups. I sadly have not, and still do not have access to make backups, I would've made them if I would be able to. It also had nothing to do with the CSS (Which Djole appeared to think was the issue.) but there were issues with the core of the PHP version we used, as well as the website itself. Most of those issues have been solved, a few yet to be solved, which I'll address to Gandalf as soon as I speak to them (For example, avatars and post verification.) those items will be available as soon as possible.
If you have the name of your topic, I'll be willing to scout through the web archive to see if I can find it for you.