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> Even when i can post, sometimes it stops working and i need to refresh the site to regain posting abilities.

That certainly is because cloudflare expires very quickly on magrathea. What I always do is write my failpost, copy it, refresh, paste it and only then click the big button. Or better yet, if you always attach a file at the end of your post, you can see by the thumbnail preview if the website is still alive or not :)