I should have more than enough espionage points against the civ whose civics I want to change, but when I send my spy over, the "Influence Civics" option isn't even available. When I check the espionage screen (I'm using the BUG mod, so not sure if this makes a difference) and filter by mission types, the influence civics mission doesn't have any available cities to perform that mission in. All the cities in that list appear white, without highlights (as a city with an available mission would appear as), and without espionage costs. Why is that?