AKACrew coins

I've been sitting on 50+ aka crew coins for over a year and can't do anything with them.. The first one I got last year. And all the aka challenges I completed.I got coins and could not use them.. My team consists of 99 players.. I could use those coins for 99 players if I  even can.. I want to be compensated for all these coins that I have... If a waste of space and it's been a waste of my time investing in these coins...