Suddenly Low Pool Income

Hi everyone. When I started mining with herominers at merge day, since from then till two days ago I was getting payments instantly. Then somehow my income from pool dropped strange.

As I know, regarding to difficulty drops, income of coin should go high with same hash but it's vice versa.

My 24h hashrate avg: 350-355mh

Sample from payments;

https://i.imgur.com/uyPgHdH.jpg

Os: Hiveos Miners: Teamredminer & Trex