Push notification doesn't work

hello everyone,
I need help please, I used [Free] Extension OneSignalSend | Send onesignal notification from app itself | October Version 5 , Send by custom filter
but it is don’t work I have already connect by AppID and APIKey and I make export apk but when I click on (Check Subscribed Users) it still unconnected

.
How can I slove it please, thanks all.
Hasan Al-saffar.

A post was merged into an existing topic: [Free] Extension OneSignalSend | Send onesignal notification from app itself | October Version 5 , Send by custom filter