Those periods of 14 days are actually server based and not starting from the time each user registered.
This means that the next period will be at 8/1/2017 17:53:20 regardless of when you registered.
I was registered last June 12, 2017.
Doesn't matter because you made all your 77 posts in the same "period of 2 weeks". You will need to post at least once in the next period to increase your potential max activity to 28.
Btw, please stop spamming to increase your post count.
Hmmm. How would I know if I'm spamming? I'm posting every 5 mins.