as some might know already
if you use a ssl cert on your site etc TLS 1.0 & TLS 1.1 encryption is no longer supported ,
(SSL 1.0, 2.0 was unsupported since 2011 and SSL 3.0 was unsupported since 2015 ) you shouldn't of been using this encryption at all
TLS 1.2 & TLS 1.3 are ok
and from January 2020 will be starting to remove TLS 1.0 & TLS 1.1 from most browsers and fully be removed by March 2020
https://www.ssllabs.com/ssltest/ is a good site to test your site etc
https://wiki.mozilla.org/Security/Server_Side_TLS is good site to show how to change your settings