Your tickets/entries are based on your current continuous subscription period. If you have canceled your subscription and then resubscribed, your entry count would have reset at the start of your current subscription period. You would start with 5 tickets and begin accumulating from there.
You can see your current Lucky Duck Club tickets by clicking on the Lucky Duck Club tile in the More section of your app. Your tickets will be available in your account section on https://luckyduckclub.com.au/ (using your 28 by Sam Wood login credentials).