TLS Warning Message at the Top of Your Browser Window
The message ('Your browser lacks certain basic security requirements, You should upgrade your browser to the latest version.') or something similar, is not generated by the product, it is a hard coded custom message that you placed in your template code.
We provided the mentioned code to be proactive with the deprecation of TLS 1.0 as a service to assist our customers.
The third party that supplied this service is now requesting a subscription so your code is not working right.
If you look in your Developer tools within the Browser window by hitting F12 you will see a message that says,