Two acts ago I was plat 3 when the season ended. I didn't play at all last act. This act comes along, I win 4/5 placements, mvp in all 4 of the wins, and then place silver 1. Is there something I'm missing that happened behind the scenes?

So, my store refreshed today and i got the Vandal Prime, i really like this skin but, i've seen many people say it gets really boring after a while, so i was thinking about saving for the Glitchpop when it comes to my store, but i haven't h...