Anyway, I think Activity is calculated over a 7 day interval - so it should rise for you guys. I know mine suddenly jumped to 100% on the second or third day, even though I did less than on the first.
I have the rare Otome games Darling I and Eisai and the 108 Guys R18 to choose from. I'll only share it with someone who answers my requests for my games Luckydog1 Doujin Game - Taiyou to Tsuki to Inu to Usagi or Shikkoku No Tsuki