Were you ever on PG Music's mailing list or ever purchased any product directly from PG Music? It's possible the third party you purchased from may have registered the sale with PG Music for you. PG Music keeps pretty good records on customers and potential customers. If you had any relationship with the company they likely can identify the sale.
As others have stated, you need to contact the PG Music sales department.
Good luck.
Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
DAWs: Cakewalk by BandLab (CbB) - Standalone: Zoom MRS-8
Laptop: i3 Win 10, 8GB ram 500GB HDD
Desktop: i7 Win 11, 12GB ram 256GB SSD, 4 TB HDD
Music at:
https://fogle622.wix.com/fogle622-audio-home