Summoner Sigil days activated

WATCHED

So I'm a subscriber to the Sigil and its active for 30days with a renewal option in the last 7days so how is it that when I see another players sigil time that are way further out. Is it different by progression, I was uncollected when I got it but now I'm cavalier so should I see an increase in days during my next renewal as shown in this picture of another player.

Gamer

No he just renewed it when ther wher 10 days left

WATCHED

Renewal is last 7days