Can you post a screenshot of the red warning? I think you were permabanned, but I am not sure at 100%. As shorena said, you were banned mosst probable for the content of your posts and you should improve your quality. Now I suggest you to don't evade the ban and not post outside the meta section.
I don't know how to upload a screenshot here but I just check my banned account and I saw a message with the red warning like this:
"Sorry soowein, you are banned from posting or sending personal messages on this forum."
That's all.
Thanks !
, finally uplaoad the image (ctrl + v).