I wanna buy more ships but the problem i have it says i do not have room for that but i have 3/6 slots filled i am commander i have a advance heavy cruiser for my current rank, i have a escort which i used in the last rank and i have a shuttle, i don't know if this info helps

What kind of ship are you trying to buy?

And also check your inventory to make sure you have a spare slot as pretty sure some c-store stuff hits inventory and then bounces out where its supposed to go..

I have that problem,beam out, then back,solve problem for me.