From my old IP on both a new and an old account, I couldnt create a post. It was an issue with the post box. I created a test account and from a new IP, I was able to post.
After inspecting the element, I found the following lines:
I edited accordingly as shown below and can now post. (happened in Firefox, Edge and Chrome, all with clean browsing history and site data)
I'm not typically a tinfoil hat kinda guy but seeing as how my normal static IP was the variable, and it happened on both accounts...this looks kinda fishy to me.
If you don't want me posting, please just say so and I will have no problem not visiting the forums.