Help with SMTP WP Forms

I can’t send a test email from the site. The passwords seem to be okay.

This is the error

What would it be the cause please?

ons:
WordPress: 6.5.4
WordPress MS: No
PHP: 7.4.33
WP Mail SMTP: 4.0.1
Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: Could not connect to SMTP host.
Host: mail.mysite.com
Port: 465
SMTPSecure:tls
SMTPAutoTLS:bool(true)
SMTPAuth:bool(true)
Server:
OpenSSL: OpenSSL 1.1.1w 11 Sep 2023
Apache.mod_security: No
Debug:
Email Source: WP Mail SMTP Mailer: Other SMTP SMTP Error: Could not connect to SMTP host.
SMTP Debug:
2024-06-15 06:08:37 Connection: opening to mail.mysite.com:465, timeout=300, options=array()
2024-06-15 06:08:37 Connection: opened
2024-06-15 06:11:22 SERVER -> CLIENT:
2024-06-15 06:11:22 Connection: closing due to error
2024-06-15 06:11:22 Connection: closed
SMTP Error: Could not connect to SMTP host.