I have 3 blue entrenched equipped. I took those cards over some other pretty good cards.
What refund am I supposed to request for that? I didn't spend money or crystals. But they are now making the event harder for me in that I don't have the other discs that I could have chosen.
I even selected some tougher fights to get at those discs along the way, resulting in extra energy use to go back and 3 star those fights later.
I don't know how many fights I lost before realizing they were broken, or how much currency I spent changing discs because of it.
This is pretty rubbish when I need to be super careful with the currency to be able to get CAT.