Okay, so if I can get you all clearly. Does this mean that all the time I became active for some days, I was keeping the 14 days activity?
Also, does it mean that I'm currently using the accumulated activity count and this will still increase every 14 days?
Yes, for each specific period that you were active
(i.e., made a post). It will continue to increase until you reach your max potential activity
(see explanation below).
You only need to make at least one post in each activity period to be able to collect the activity at a later date. For instance, you could make one post in three different periods and you would then have 3 posts and 3 activity, but a potential activity of 42. Once you made the 42 posts you would then have 42 activity but no more. If you made one post in 35 different periods you would then have 35 posts and 35 activity but a potential activity of 480. That means you would be a Junior Member but if you made the full 480 posts you would instantly become a Hero Member.
I used AI to check the number of activity periods where you made at least one post, using the data from
https://loyce.club/archive/members/358/3587984.html and this
spreadsheet. I also accounted for the deleted posts, so this should at least give us a rough idea:
Now let me tally the periods with at least one post:
...
That gives 40 activity periods in which coinlary made at least one post.
Keep in mind that we can only get 14 activity points for every period. Assuming the AI didn't make a mistake
(I manually counted 41), you currently have 560~574 potential activity that you can collect by posting. This will continue to increase by 14 for each upcoming activity period where you make at least one post.