Why is the smtp connection not working?

Question

SMTP

Good afternoon.
On my hosting, the usual sending of emails does not work.
It is necessary to configure through smtp.
I installed the wp mail smtp plugin, read the article https://wpmag.ru/2015/smtp-wordpress/
and set up my plugin, but it doesn't work, an authorization error.

Answer 1

Set the switch in the field: Type of Encryption to SSL / TLS
UPD: well, in the sender field - it is wrong to indicate mail on your domain, it should be the same Google one. Create a real box on your hosting and connect via SMTP to it.

Answer 2

Sending via php works?