This number seems to be a Backerkit order number, not a backerkit ID.
Please check this link to find out https://community.projection.philips/t/how-to-find-your-backerkit-id/5181?u=ivog
If you’re confused about all these ID’s and numbers, please read this explanation by a fellow forum user: Demystifing Numbers (Indiegogo, Backerkit etc.)