Good day to all!

I want to upload my game, but I dont understand how to implement copy protection.
I read this topic https://itch.io/t/162696/are-games-protected-from-being-copied
But I dont undestand needed steps =(
My games don't need any permission like "camera, location, audio, etc"

Can you help please?

P.S. What I understand in "needed steps":

1) With web-request:
1. Send web request to https://itch.io/(?) content like:
client_id: (that is taken from(?) or written by user, and he can find him in(?))
game_id: (that is taken from(?) or found in(?))

2. Get answer with content like:
is_purshased: true (or false or 0 or 1)

2) Some plugin

1. Go to https://itch.io/(?), download "some name".
2. Run function (?) on application start
3. Get answer