From the main menu, I hit “Continue.” It goes to a screen showing both characters with exclamation marks over their heads, showing all cards in the deck with a “view all” button. I don’t know what I’m supposed to do to start the game.

Hmm... you most propably have too Many or too few cards.

Go though your card types and remove or add to your limit.

Another thing can be that you got reward. That requires you to click the character and increase your skill or power and then click green arrow to go on.

I don’t know how to add or remove cards to my deck. Also, clicking on the exclamation mark above the character’s head just shows the character’s deck. It does not show how to add a power or skill.

Here is a screen shot of the situation:

https://d2duuy9yo5pldo.cloudfront.net/asmodee/73a39fc0-4a27-4205-abb4-0e978659ef93.PNG

Here is a screen shot of the situation:

https://d2duuy9yo5pldo.cloudfront.net/asmodee/73a39fc0-4a27-4205-abb4-0e978659ef93.PNG

 

See how Kyra has 6 of 2 weapons and 7 of 6 blessings?

 

She is only allowed to have 2 weapons in her deck and 6 blessings.  Flip through the different characters and card types to send back any unwanted cards to the game decks.

 

Drag unwanted cards down to the bottom half of the screen.  It's also likely that Merisiel has a few too many as well.  Once you've made your decisions, the green arrow should be active and you can move onward.