Check if no trainer is running per task manager or restart your computer and try again. Something on your end is blocking the trainer.
90, may I ask why the instant troop option was removed?
Something wrong? It was working completely fine with me. 🤔
The easiest instant build is to hit enter and type "aegis" at the beginning of each new map. The trainer is great for unit strength and armour, population size increase and the kill function for destroying buildings is extremely useful too. Though i often need too use the "robin hood" cheat too increase the gold up to 25000 to buy the see all thingy (i forget words and it can take days to remember them again).
Yes, I'm aware of the aegis cheat, but I didn't use it because I thought the corresponding cheat would work with every other civilization AI as well. So I found the Instant troop option to be very useful, until 90 just told me they added a trigger for it.