Why do you need to post more than once every 6 minutes?
The time limit goes down as soon as you enter your second activity period, by the way.
waittime = 360;
if(activity >= 15)
waittime = (int)(90 - activity);
[other code removed due to irrelevance]
Why would it be changed to, "the last posting from your account"? If anything, it would be IP/account.
i know about activity my ask is about error message if this error message right when i change IP can post in less than 6 min

im right?