Hi @BSValli Welcome to the Candy Crush Friends Saga Community
In Candy Crush Friends Saga the daily rewards are not a full reward you can use right away but are stickers you collect. Once you have collected the required amount you will either get a lollipop type reward that you can choose to use at anytime or a timer will start for one of the booster. The timer will show on the screen where you choose your friend. Once it has started it keeps going even if you do not play.
I am having the exact same issue. I just keep getting all rewards but I can't find them to use them. I also can't receive new lives..I can send them all day long when it lets me but I can't find the backpack either. It doesn't show it only the new characters that I was able to redeem.. It's confusing.
Maybe Customer Service can help. I have also went to YouTube and searched how to pass a certain level to help me. We could prob Google our questions if we can't get a straightforward answer here. It's worth a shot! GOOD LUCK AND HAPPY PLAYING