WP warn aobut outdated version of PHP but I have correct version in Host

Hi, WordPress warnning:

Your site could be faster and more secure with a newer PHP version.

Hey, we’ve noticed that you’re running an outdated version of PHP. PHP is the programming language that WordPress and Yoast SEO are built on. The version that is currently used for your site is no longer supported. Newer versions of PHP are both faster and more secure. In fact, your version of PHP no longer receives security updates, which is why we’re sending you to this notice.

Hosts have the ability to update your PHP version, but sometimes they don’t dare to do that because they’re afraid they’ll break your site.

To which version should I update?

You should update your PHP version to either 5.6 or to 7.0 or 7.1. On a normal WordPress site, switching to PHP 5.6 should never cause issues. We would however actually recommend you switch to PHP7.

I have At a Glance Plugin, ant report this.
WordPress 4.8.2 running Ados theme.
Running PHP version: 5.3.29

But in the host panel I see this
PHP support (version: 5.6.31; handler: FastCGI application).

I need to do something? thanks

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