Ok so here's the deal. I have spent necessary coins to upgrade the se5 speed. However I noticed that with 4 star speed, it flies the same speed as the spad (3 star speed). What's the deal with that ? Is there another upgrade to speed on the se5? If I click upgrade, it will certainly let me spend my money wether it upgrades or not. Kind of like most people have done with the pilot in the hangar where you buy a pilot and notice there is a gun button and try to buy and it takes your money as many Times as you try. I spent several thousand coins trying to buy a gun that wasn't activated yet. My hangar shows a fully upgraded speed category and I don't want to attempt to try to spend another 100,000 coins to see if it can fly faster. I have asked many times in game and get no response. Is this a glitch? Wih a bomb the spad (tier 3) flies roughly 125. The se5 ( tier 4) flies the same speeds. But it shows more stars in the speed category in hangar.

Not just that plane, but it's a glitch. Saw the same thing when I bought and upgraded my D.V. If you noticed that the bar filled when only making first or second upgrade, unlike the gun I noticed planes let you know when max upgrade is reached and will not let you spend more.