www.wysiwygwebbuilder.com

version 15.3
When publishing a page with a form the phpmailer is version 5.5 instead of PHP Mailer version 6.1.4
Why?

The included version is 6.1.4
I think you are looking at the wrong place in the code.

<?php
/**
* PHPMailer - PHP email creation and transport class.
* PHP Version 5.5.
*
* @see https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
*
This on the is on the php mailer file when published
where else should I look?

This is the minimum PHP version.
The version of PHP mailer is further in the code.

Oke I didn't know.
Anywat thanks for your quick response

Can I just replace the old php mailer,smtp,exception, file with the new ones or do I have to publish the whole page?

I recommend to republish the whole page to make sure all files on the server are up-to-date.