We understand your feelings, so to avoid any misunderstanding, let's check how this feature works.
 
The thing is that to get the fifth package for free: you should make the SAME four purchases through the Buy Menu or the pop-up “Not enough coins.”
 
All purchases which were made in special offers, Coupon Climb, and sales are not related to this feature.
Despite not getting you closer to the fifth pack, such purchases give you a huge benefit in collecting special offers and rewards there are extremely profitable.

Paw-lease note Our exclusive "Best Value" offer is designed to provide you with maximum benefits, and in this special offer, we have significantly increased the number of coins available in the Buy Menu. This deal is incredibly cost-effective and tailored specifically for you. Due to its exceptional value, we have omitted the free-purchase progress bar next to the price button. Rest assured, though, that this offer grants you a substantial amount of coins that far surpasses what you would normally receive for free. 

Please be aware that when you make a purchase in the Buy Menu, you won't receive a free checkpoint if the 5th free purchase progress bar is not present next to the price.

In any case, we're always here to assist you, so if you still have any doubts, contact us via the Support button, and we'll make the situation crystal clear.