trying out litecoin pool 'friendshipcoin miningpoolhub' but only mining invalids

[Sweetrevenge]

I decided to try friendship miningpoolhub  last night since I live in Asia and I needed a pool that had Asian servers. When I checked my workers this morning, I noticed that I mined 0 valid shares and 150 invalid shares. What could cause this? I'm using cgminer and when I run the program everything seems normal and it reports I'm mining 500 kh/s.