i will definitly give it another try once you fix it
if i can give another feedback, i think it shouldn't be useless to invest in countries and should give some sort of benefit
because right now, the best strategy is to wait for them to be in red (so they can't go lower), put them at -1 coin, and wait for last moment to add 1 coin and save them, then repeat.
putting them at more than 0 coins is basically useless because they are gonna lose coins over and over again if they have some, but in the red they completely stop
maybe more coins should gives reward for threshold, overall spawning rate of coins, better coins, or some sort of powerup? idk, just ideas!!