V2 Signing of Quest App in Unity

I used Unity to build and sign the APK.. When I try to upload the APK to the Build Dashboard Alpha Channel for testing I get this error:



I followed the link but was unable to get any of the solutions to work.

I did a bit of surfing on the Developer Docs and found that for the Native version the signature has to be a V2 Signature.

"Oculus Quest native APKs must be signed using the v2 signing scheme. " 
https://developer.oculus.com/documentation/quest/latest/concepts/mobile-application-signing/

I've tried a number of the solutions online trying to switch the signature to a V1, but I have had no luck with this.

I'm new to the Quest Development world (this is my first test Quest build), am I missing something?

Any assistance would be welcome.  :)