I’m new here and I will definitely observe what will happen to my statistics. I’m so nervous that people can’t read the number or anything else may happens XD
If you mean the ID number you put on each card, people can ask for help from the admins if the number is missing or unreadable. But it doesn’t happen so often that it’s not readable!
Other things will happen for sure, cards getting lost, cards sent the same day taking incredibly different amounts of time, people disappearing from the site without registering (maybe with good reason, maybe they got bored), and also add a sprinkle of pandemic making it all more unpredictable. It is part of the fun! Sort of 
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