Special Offer

I have just started playing and when I click on the recharge button to get the SPECIAL OFFER, I get the msg "Meet the requirements first to join". However, there are no requirements listed. I am level 38. Must I be higher?

Also, when I try to get the download the DESKTOP App, I see a flashing arrow at the bottom left of the screen that says CLICK TO INSTALL, but nothing happens when I click on the arrow. What am I missing??