What are SSL / TLS / STARTTLS
These are different ways to encrypt messages for internet communications.
SSL is the old name of TLS. They are same.
But STARTTLS and SSL/TLS are different.
No-SSL is also called “Non-Secured”, “Insecured”, “None” or “Plain”
For advanced users
Our server use the latest TLS version 1.3.
Some older devices (such as Iphone 6 and Windows 7), are using older version of TLS or SSL.
This is why some devices can't communicate with our sever in a secure way. Use the un-secured communication in these situations.