Now I know K-Gems have to do with K&K but no one replied to me.
But I did an offer for Final Fantasy, I had to get to my citadel to level 10 and I'd get 3,250 k-gems. I got to citadel to level ten the next day after I downloaded the game on Friday and I went into K&K and it didn't give me my gems so I reported it to Fyber and they told me to send them screenshots and I did, they normally message be back after 3 days. I sent them the report around 7 ish Saturday night so the following Tuesday night, they should have messaged me. It's now been 5 days and Fyber has not contacted me back and I don't know, what to do because I feel like I wasted a day and a half tried to get the k-gems and I didn't get them.