I got the message in this picture:
The thing is, I only play in one device, which is an iPad.
Now, I started playing “Grow a Pet” at the end of the Lucky Clover Petopia and I managed to get 50 gold bars then, with no problems. A day or so after the end of that event, I got “Grow a Pet” again. That’s where I got the other 37 gold bars. So, I wonder if it was an error of the game in the sense that I shouldn’t have got a second “Grow a Pet” event, or there actually was a second event and I should have got the gold…