Facebook authentication working on one device but not in another one (in debug apk)

Many thanks @vibinflogesoft! I will try this out!

After trying this out, I face the same problem. Here below what I did.

1. created a release key
   keytool -genkey -v -keystore recruta.keystore -alias recruta -keyalg RSA -keysize 2048 -validity 10000
2. copied the hash key into facebook developer website
3. generated a release version of my app
   ionic cordova build --prod --release android
4. signed the apk
   jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore recruta.keystore platforms/android/app/build/outputs/apk/release/app-release-unsigned.apk recruta
5. zipaligned
   zipalign -f -v 4 platforms/android/app/build/outputs/apk/release/app-release-unsigned.apk Recruta.apk

the authentication works good on my device but not on my customer device.

I can send you the ‘apk’ privately if you would be willing to test it on your mobile.

Thanks again!