Golden airplanes lost

Hi guys. So I had to reinstall the game but had it on Google. However it gave me back an older version with only 1 gold airplane. Is there a way to restore the last play I had? I had 7 gold airplanes and was on level 16 of PRG. This one boosted me back to level 1 with nothing. It also melted all my savings. How do you guys get so many gold planes?

Sorry for your loss and that Google saved just an older level. You get the gold planes the same way you got the lost six. Play along and level up your airport.
All players with many gold planes just play this game a long time and many of them bought gold planes for real money.

Thanks. Good to know. I might take advantage of this. I only played the past 2 months.