Hi zup
I have spent hours flying, got to level 28 now,  but I am not allowed to buy the next plane, a stuka.
Why not?   If we can't buy anymore planes, then we can't progress.
It then becomes pointless playing the game.
Why can we not progress?
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some planes you need to have the premium thing, but idk, i have been absent for a while so idk what updates happened

You should get a message explaining why you can't buy a plane. Does it display anything?

The message says I have to buy a premium account to buy this plane. Why?
it's the next plane to buy, I reached that level.
​​​​​​it doesn't say you can only get to level 28. Then you have to buy a premium account.
suprised.