Step one 2 tumble weeds and 2 cacti ( 2 cactus plants for English as a second language players).
So weird! I built my tumble weeds and cacti. Instead of a next step, I got a buy coins, buy crystal pop up. Now the rodeo hat is gone from my side bar.
Build a rodeo store. Build a rodeo ring. Feed two dinos or feed one dino twice and make the saddle recipe in the rodeo store. Johaley, this happened to me too. Close out. Open your game in a few minutes and then pull your icons down and see if you can get it like I did.
I note that the 5 steps of the regurgitated Rodeo theme don't have dependencies. All 5 steps show up at once. Usually, one step depends on having done previous ones. Since it appeared that Step 1 required an expensive crystal purchase of a large cactus (I was wrong about this: I later found the regular cactus for coins), I started with Step 2. Also, I already had the necessary items in inventory for all the steps (except "build something in stores" and "feed your dinos"). If these challenges disappear, it may be because they are trying to fix the lack of dependencies.
Same thing happened to me. After tumbleweeds and cacti, i lost the rodeo icon.