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I don't know about losing boosters because I'm pretty new to the game. I just like to relieve stress. If you check all, the only option I see is accept. I'm not really trying to interact with a lot of people.If you check all then surely that's the same as deleting them as they will disappear right?
If you're not worried about losing boosters then you can delete the app and that will get rid of them for sure.