My app works as a PWA beuatifuly - thanks.
How do I force the app to open in https
That is if someone keys in http://marksapp.com to start my app how do I force it to open as https://marksapp.com
That’s a server function and what you’ll need to do is put an entry into your .htaccess file to redirect from http to https. There are lots of examples on stackoverflow.com or for Google you want “htaccess redirect to https”
Does your site have a certificate? If not, you can get one for free from Let’s Encrypt:
If an ISP manages your site, check with them. They should be able to set you up.