I've also tried raising the minSDK to 18 and maxSDK put on 23 but that doesn't seem to do anything.
Testing on Nox emulator and samsung galaxy S4, both with the same results.
Devices subscribes to notifications without errors, so I could send them notifications.
APK can be sent in private by demand.
I've also tried to use the master branch in one signal's plugin, but in that case it doesn't work at all (device doesn't register and i don't get player ID)
Used plugins (if relevant):
Framework/game engine (if relevant):
UPDATE: on iOS, i'm asked to agree for push notifications. The user then appears in oneginal, but is not registered for push notifications withthe following error: "Missing Push Capability" (which seems to be something that's supposed to be configured from xcode...