Cyphertalon

Ive tried dozens of times but i used it to switch a card in my hand with one in the discard pile and it will not let me select a card. I chose one from my discard to switch out anx then i cant pick one from my hamd, cant close it out, cant reset. Even wben i close the game and restart it and hit continue it brings be back to the same place. Help please!!! Dont want to stop playing.