Why is ONE site not working for me in Safari?

Question

safari

I wanted to do HTTPS on the site through cloudflare, then in the end I didn’t do something, but I got the error "safari cannot connect because it cannot establish a secure connection."

Cloudflare removed, https WordPress plugin removed. In all browsers and so on, the site works as it should, but in safari and skill alone it is dead. My own site)

Cookies cleaned, cache too. What else?

Answer 1

Most likely you have enabled HSTS. The browser's task is to remember that the site can only be visited via HTTPS, so if your site is not available via HTTPS now, it will not open, that is, everything is correct, as intended.
Solutions 2:
1) (preferably) configure all the same HTTPS
2) search the net how to reset HSTS in Safari, this is not a cache or cookies, this feature should sit much deeper in the browser
3) a bit of a joke option, depends on the HSTS settings - just wait; HSTS indicates how long to visit the site exclusively via HTTPS; if you didn't put 10 years there - there is a chance to wait for this period to expire :)