Morph android bug

[Bigsmoke2254]

I'm currently trying out a morph tribal deck on the android version. I currently am un able to cast morph cards face down for 3 but I am able to however flip them down when it says I could With a card.. Is there something I am missing? It allows me yo cast the cards as normal w mama cost but again can't cast for the 3 for face down please help. Again android version