I don't see anything wrong here after checking your profile. you gone inactive at month of august. and then started activity again at december. so probably you lost your activities when you were inactive and offline from the forum.
one question. during the time between august and december (the time when you did not make any posts) were you logged in? did you visit the website everyday?
No, I didn't login during that time period. Is there a minimum requirement for logins before the number changes?
You need to perform atleast one action in bitcoin for every minute to consider you are active here so that the value will be added one minute.Just take a look at now probably few minutes may be added there.
By the way total log in time is literally useless metric so don't worry much about it.