In this case, you need to track it in the following days to see if it's normal. If it's returned back again or you couldn't receive it in time, you need to contact the seller to reflect the problem and give you a solution.
Hello, could someone please check this tracking number 00459007738845621515? I tried to check it by tracking site and there is an info, that "the number can't be found", I check it every few days, but nothing changes from 2.11... Maybe they lost this parcel in post office?
In this case, you need to track it in the following days to see if it's normal. If it's returned back again or you couldn't receive it in time, you need to contact the seller to reflect the problem and give you a solution.