DD has her driving test booked but for way in the future (cheers Covid). She’s very ready to take her test and tbh it’d be massively helpful if she could get her licence so I no longer have to stay up until gone 11 several times a week to collect her from work 
We have the Testi app to try and get a cancellation but every single time we get a notification, no matter how soon we click on it, the cancelled slot has already gone. Is it just bad luck or is the app not worth it and we’d be better off checking manually?