Can't post in classifieds section

Can't seem to access the classifieds section to post... Not really sure why, I've never had any issues with previous sales i.e I haven't dicked anyone over, not responded to messages or misold items. I wouldn't sell anything I wouldn't buy myself or something thats unsafe. I always sell things at a low prices as I like the sense of community and I'm not here to profit. Finally, I would definitely never post across multiple sites.

Bit confused ... The only thing I can think is maybe I haven't posted in a general thread in a while, but would this affect this?

Any help appreciated

Ps Sent Velocio a DM but thought I'd also post here in case anyone else help

https://www.lfgss.com/ignored/

Check if it's listed here, and if so unignore.

Velocio replied to my DM, turns out I was trying to post in the wrong place. As I said its been a while since I've tried to post here. Feeling like a bit of a spoon now.... Anyway thanks for your help Tijmen!

Cheers,
Andy

Trying to post a bike for sale in classifieds and getting "413 Request Entity Too Large"
I even tried to post it without any pictures, just text and still the same.

edit: managed to post the ad text without local image attachment