Make sure you have no curse words in your post. If you wish to cuss then put other signs in it such as assh*le or $hit or f*ck. Other than that I dont see why you wont be able to post unless of internet connectivity issue maybe.
It can also be alert words for all the spam in here such as s p e l l s. That word will affect a post.
So will the word s w i t c h because it has the word w i t c h in it. It’s because of all the s p e l l master spam in here.
Whenever I couldn’t post it was because I’d used these words somewhere in my post.