question

I still can't figure how to use it. I'd really appreciate if you emailed it to me.

Thank you.

I've emailed you the link to the draft version of the doc (and I edited your email address out of your post - don't worry, we can get that from your account, and I'd hate for you to get spam because some bot crawled our forums).

Thank you so much for sending it to me and taking my email out.

One final question, should I register my Android device every time the app launches like iOS? This is how the example does, but there is some controversy about it online and I wonder how the PlayFab plugin implements it.

You should only need to register once, when the player agrees to accept Push Notifications. I would recommend re-requesting this of the user whenever you push an update to the game, as well as on installs, so that you can get them signed back up. You should never register a user for Push without asking them though - that's something that can get your title banned from the iTunes/Google Play stores.

You should only register the client for Push Notifications as a result of a player confirmation that they do want to receive those notifications - signing them up without asking could result in being removed from the Apple/Google marketplace. That said, it's a best practice to re-ask (and if they say yes, re-register) the client when you update your title, to make sure you're getting people to accept your communications.

@Brendan can you please give me an example snippet of how to use custom payload title,message and icon for android push notification?
Git repo link is broken