I mailed early this week and had the PO pick it up at my mailbox. i printed out the label from PBS and requested online it be picked up. That afternoon there was a receipt in my mailbox saying it was picked up. I got a email from the PO with the tracking number and attached was a similiar receipt but this one said no package was picked up/ couldn't be found. I entered the tracking number and that tracking number couldn't be found on the website. Where is my package and will it get to its destination? how can i find it?

I'd say you are going to have to contact the post office and ask what the email meant. Sounds like the tried to do another pickup, but they are going to be the ones to explain what they are talking about.

Yes contact the PO. Also, the 'tracking number' is not nesscarily a tracking number but delivery comfirmation so the PO is not required to scan the barcode until it's deilver so all other scans are bonus scans.