I use flexible Cloudflare SSL. But when I check my domain on whynopadlock (dot) com, I got this warning.
You currently have TLSv1 enabled.
This version of TLS is being phased out. This warning won’t break your padlock, however if you run an eCommerce site, PCI requirements state that TLSv1 must be disabled by June 30, 2018.
Can you explain what is this and what is the impact?