Trying to get the Auto Seed but it keeps asking me the previous upgrade of the Sprinkler.

[wide axle]

I have all sprinklers unlocked. I also have all the materials needed. But it just keeps asking me "Need previous upgrade".

Thanks for help in advanced!

[inner folio]

You can only buy the sprinkler attachment recipes in order. You can’t skip to the one that you want

So you have to purchase it starting from the first one