Mahjong Sanctuary- Random Levels

I have completed all the biomes and have been forced into playing "random level" games.   The credits for replay are only 20-30 feathers, however the credits do not register in my total.   I had to play 20-30 games to complete the spinner challenge and a daily challenge within the game, and never got any feather credits...meantime I was spending 78 credits for the 2nd cell power up that depleted my 4000 feathers to 3,000...so pogo...you can credit me 1,000 feather credits and create a new biome!!!!Thanks