The game Is great but i'm confused by one thing... I digivolved my meicoomon into Meicrackmon VM and she's dealing less damage per attack despite having better stats as before
Maybe its a bug, or some sort of moveset change, like she is no longer capable of using physical/long-range atk and is solely focused on only one type of attacking
Every time your digimon digivolve their happiness reset which decrease stat on atk/sp atk. You need to praise your digimon after you train or battle to increase happiness.