I started playing the free premium version and purchased full game through 
the free version. Due to bugs I had to uninstall and bought premium version 
which is working fine. I'm happy to say customer support was excellent and 
provided quick response and full refund. Guys be patient. Yes this game is 
a little buggy but this is mainly a PC game. It is not easy converting a 
full PC game for android and developers have my full respect for taking the 
time to do so. There was one additional bug I sent mail about but didn't 
get reply. Maybe mail got lost? I tried to capture a ship and my crew just 
stood there letting themselves get killed and not shooting back. It only 
happened once but could happen again. Apart from that I'm enjoying the 
premium version of the game hugely