Hi @newtonj0131 and welcome to our adorable Community 😊 This section is exclusively for Candy Crush Saga. We have a separate section for Pet Rescue Saga and you can reach it on the link below.
However, you don't need to make a new post as we will move this one to the correct section.
As for your issue, you should know that the boosters you collected are saved on your device's memory. This way you can reach them even if you are offline. Unfortunately, this also means that if you reinstall the game or change the device you will lose all of them. Therefore, we don't recommend collecting a lot of boosters. It's better if you just use them while playing. Here are some tips on how to safeguard your collected boosters.