Wow, that's....a lot of time, any other side-effects? Dehydration? That jolting *feeling* when you spot a Canada Post mailbox irl? Obviously, the post-master dreams, that's completely normal -- I'll take note of that for the fine-print.
This is prob one of the best comments ever, it really keeps us going to hear how much people enjoy playing, so thanks so much <3
And thaaat might be a bug... the intended behaviour atm is to preserve any purchased stamp packs (i.e. collector's, mystery) and refresh the issued kan-post stamps every day (i.e. removes any unused stamps from yesterday's pack, gives you a new pack to open today). Screenshots/screen recordings/your save files would be super helpful, you can submit them in a bug report to our discord if you want us to take a look!