Hi, I'm new to this forum. If something wrong pls told me.

As topic said, I was not there when the postman came. The postman left me a notification bill stated that PLKN letter.

What happened if I failed to take from the post office? The paper stated please collect your item in 15 calender days, otherwise the item will be returned to the sender. So, if I didn't take, any action will be taken from PLKN?

Thanks everyone. What if the notification was in the drain or somewhere else that I didn't event notice it? Is this counted as my fault?

Also, what health problem is consider as serious that cannot enter NS?

Is allergies or anemia consider a health problem too?