Easy WP SMTP connection fail

Trying to set up Easy WP SMTP to send Gravity Form notifications. I've tried a basic gmail address as well as my own domain (which works on another site), but I keep getting connection error when I test it. I'm on hold with host to see if port 465 is blocked for some reason, but seems odd because that is the port that gmail, a popular option, uses. Should I be looking for another error?

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