If you wish to move from OneSignal, Notix, iZooto or any other push provider to PushnotiAds Publishers - you are doing the right thing! :)
It's easy and safe! All of your active subscribers will resubscribe automatically after you do these 2 simple steps:
Remove your existing provider's SDK initialization code that you added when you followed their setup guide.
Remove any Javascript code that calls your existing provider's SDK and replace it with its Pushnotiads equivalent (just follow this guide)
That's it!
All of your Active subscribers will resubscribe automatically once they revisit your site that has updated code and SW of PushnotiAds Platform.