"Qardioarm app not connecting to support on iPhone 16: I can't use Qardioarm app any more on my new iPhone 16. The app does not send a link for Login w/o password, because the iPhone cannot connect to support.qardio.com, because this site is unfortunately not secure!"
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Encryption Conflation:
Oddly, the domain has https, which means it is encrypted. Yet, you cannot get in because it is says it is insecure. So, Apple is looking out for you. If it were secure, then you'd see a dulled out lock to the left of the URL --but that site does not have it. So, contact the registrar of that site, seeing what the issue is. Enter the domain here, and you see who to contact by eMail: https://www.whois.com/whois/