Test mail fail after hosting change

Hello,

We use this plugin to send emails in our web.

A couple of weeks ago we migrated the site to a new hosting and the plugin stoped working. I asked the hosting if maybe smtp or the ports for tls o ssl were blocked, but all that was ok. Making a test email i received the following error log:

Versions:
WordPress: 4.9.9
WordPress MS: No
PHP: 7.0.33
WP Mail SMTP: 1.4.1

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
Host: smtp.gmail.com
Port: 587
SMTPSecure: tls
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.0.2k-fips 26 Jan 2017
SMTP Debug:
2019-03-11 14:48:54 Connection: opening to smtp.gmail.com:587, timeout=300, options=array (
)
2019-03-11 14:48:54 Connection: opened
2019-03-11 14:48:54 SERVER -> CLIENT: 220-az1-ss15.a2hosting.com ESMTP Exim 4.89_1 #1 Mon, 11 Mar 2019 10:48:54 -0400
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
2019-03-11 14:48:54 CLIENT -> SERVER: EHLO https://www.acalis.cl
2019-03-11 14:48:54 SERVER -> CLIENT: 250-az1-ss15.a2hosting.com Hello https://www.acalis.cl [68.66.224.35]
250-SIZE 52428800
250-8BITMIME
250-PIPELINING
250-AUTH PLAIN LOGIN
250-STARTTLS
250 HELP
2019-03-11 14:48:54 CLIENT -> SERVER: STARTTLS
2019-03-11 14:48:54 SERVER -> CLIENT: 220 TLS go ahead
2019-03-11 14:48:55 SMTP Error: Could not connect to SMTP host.
2019-03-11 14:48:55 CLIENT -> SERVER: QUIT
2019-03-11 14:48:55 SERVER -> CLIENT: 221 az1-ss15.a2hosting.com closing connection
2019-03-11 14:48:55 Connection: closed
2019-03-11 14:48:55 SMTP connect() failed.