Using iPhone 13 Pro Max iOS 16.5.1 I have restarted my iPhone and also deleted and re added voyager to my Home Screen. The webpage in safari works but the Home Screen app shows “Safari can’t open the page because it couldn’t establish a secure connection to the server.”
In case this shows up in anyone’s search,
It persisted for hours but a few hours and about five times reinstalling the app it started working again.