I just spent gold on the upgrade tree so i could upgrade the plane and use in tier 2. After spending the gold to unlock upgrades it won’t let me actually upgrade the plane now. What is going on? The game literally just stole my money.
There are 2 versions of this plane, the attacker version with steel color.
And the other version which is the legacy fighter version.
The upgrades only work for one version, so you need both if you want to upgrade both.
