First of all, thank you for this script!
I've noticed that this script has some problems with second season anime because kissanime doesn't always count from 1. Take for example http://kissanime.ru/Anime/Boku-no-Hero-Academia-2nd-Season
. If you click one of the episodes, for example episode 17, the script will update your progress with 17/24 instead of 4/24.
If you could fix this, this script would be perfect.