Rule or bug? Cant take partner zoo

[mturton]

In this game twice tried to take partner zoo, but unable. First time is reward for 8th conservation point, second is ordinary association action.

https://boardgamearena.com/table?table=398347420

Partnerzoo 1 & 2 (scroll down) https://imgur.com/a/dfIqoMZ

Is it bc I cannot get another worker since I already have four?

[Wrathberry]

Did you Upgrade you association Action? If Not, you Just cant Take a third Partner zoo

[Ez0ah]

In this game twice tried to take partner zoo, but unable. First time is reward for 8th conservation point, second is ordinary association action.

https://boardgamearena.com/table?table=398347420

You didn’t upgrade the Association action, which is needed to get a 3rd/4th partner zoo

[mturton]

Ah of course. Ive never not upgraded completely forgot. Was trying new thing