Additional information:
I found that my CSR certificate changed in CPanel → SSL/TLS and It wasn’t my doing.
I tested my website each time it was good but this last time a problem appears and no changes were done before.
The SSL certificate software on iFastNet Free Network’s VistaPanel (that is the cPanel) is having more bugs than before, that allows you users to have a self-signed certificate instead of the normal one. For me it works fine; for you it is a bug of the self-signed certificate in cache, so you need to clear the cache and see if it works or use 1.1.1.1.