Hi, thanks for letting us know. To clarify your problem, do you mean that you cannot do Research with Research Points or buying upgrades in the Upgrade Tree with Ores? Would love to hear if this is a bug or if you didn't like the mechanics. Thanks for playing!
Not research, the upgrade tab. There should be 3 initial nodes that requires different ores, right? But after prestige all 3 nodes shows require 0 gold, but I can't buy any of them even if I have gold.
yes, there are 3 upgrade slots available and if you have enough common öres (blue, green, purple), you should be able to buy them. You cannot buy upgrades with gold.
