Thank you for checking! Now I understand the reason. I think most sites no longer support TLS 1.0/1.1 and TLS 1.2 will be deprecated soon. Unfortunately, the ESP8266 cannot be used for this purpose. An ugly solution. but useful is the http_to_https proxy.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Hmm, go for https://www.cdn77.com/tls-test and enter both pages on supported TLS versions
tls & ssl test result for http://www.pur3.co.uk
tls & ssl test result. for djdjeleeisvpd3y-elink.adb.eu-frankfurt-1.oraclecloudapps.com
Edit: AT command 1.x does not support tls 1.2