Simply put, the new system requires a minimum amount of RC to post. Without that, one is not able to put up anything. Unfortunately, this did snare a number of Planktons who are not spammers which is unfortunate. It is also, I believe, a temporary thing.
Nice!!
(There you go @taskmaster4450. Here... 14,200,000,000 RC just thrown to the trash can) LoL :p