Step 1: Login to your PushAssist Control Panel.
Step 2: Go to Main Men-> Sites -> All Sites
Step 3: Click on setting button
Step 4: Tick the Switch to SSL check box & save setting. Go back to setting option you will find a Green Download Package File button. Download it.
Step 5: Now extract the downloaded package, then Copy
service-worker.js files & paste it in your root folder.
Step 6: Include
manifest.json file in your web site header file, before
<link rel="manifest" href="/manifest.json">