FearLess Cheat Engine

It's been a week since I played....is anyone else playing? I so wanted this game to be great. I like it alot but doesn't seem like the majority does....sad. I plan on playing this week. Thanks for everyone's hard work here!

I know it's been said before BUT can someone please instruct me on how to use challenge card?
Do I activate and press "-" OR am I supposed to go into a menu or something? Just wanted to understand the steps. thanks in advance!

I know things have slowed down BUT I just want to express my appreciation for all the hard work that EVERYONE has done and are doing!