After playing a bit with the new Geyadrone Dihada vanguard (Android, Samsung Galaxy A23) I noticed that its +2 ability only gives 1 shield. Moreover, it does not seem to trigger the ability of Ob Nixilis, Captive Kingpin, even though Dihada's ability specifically states 'opponent loses 2 life' rather than 'takes 2 damage'. Thanks for looking into this!
I’ve tested this on my Apple device and have seen the same issue for shields
At least you have +1. Her 3rd skill does nothing beside draining shields.