Can't add products for Inapp-billing (Android)

I’ve published an ionic-app to Alfa in Goole Play Developer Console, trying to add products to have as In-app purchases, but i’m not allowed to, it says i need to upload a new APK with the licence-key, but i’ve included this license key with the BILLING_KEY param in 2 different inapp-plugins and republished the app. But no difference.

Anyone encountered this issue before?

Ionic 1.7.14
I’ve tried with this plugin: