How do I solve this problem so I can command this critter?

I bought some really strong sylesti and I wanted to add them to my party, but that came up. Help appreciated :D

I really can't get past the zombies in the Enigmatic Grotto ;o;

Also how should I divide my stats on my sylesti? I've tried a bunch of different stats combos :O

if your level is lower then the one of your pet he will not obey you, this thread will help you with the stat and item : https://www.sylestia.com/forums/?thread=11101

try to send some of your pet in mission for get more useful item can help too ^-^