Board Game Arena

I am trying to play Earth Catapult (pay 2M less for cards) and Space Station (pay 2M less for space cards), but their effects are not stacking.

Should they stack? It seems logical that with both of these cards, I should get a 4M discount on space cards but it's not happening

I have tried playing cards that have a bonus to take another action (e.g. Douglas Fir, Badger). But I am not given the option to take the 2nd action. Why is that?

I have the Alien Tech institute in my tableau, which gives a -2 cost to all Alien Technology worlds. I am now trying to play the Alien Rosetta Stone World, but the -2 to cost isn't being applied (it still costs 3, not 1). Why is this?

I am at the end of trail and trying to visit a park. I am unable to select Redwood and Pinacles National Park cards even though I have the necessary resources. However, I can select Wind Cave National Park, even though I DO NOT have the resources. I have 2 Trees, 1 mountain, 1 sun, 0 water, and 1 wi...