To use one Push Monkey account on multiple websites, you have to:
2. If the website is under HTTPS, place the file attached here on the root of your website, so it is accessible at https://mywebsite.com/service-worker-Y21JZ893AMLDVKX76.js .
If the website is not under HTTPS, then you can skip step 2.
3. Access your website in Chrome or Firefox to check that the permission prompt appears.
NOTE: Using the same script on multiple websites means that visitors on Safari on MacOS will not be able to subscribe for push notifications.