html appearing in emails from contact form

Hi there. Using WP Mail SMTP plugin by Mail Bank, Jetpack’s contact form sends visible HTML in the email body. It is not visible in the form on the website. This only started happening after the Jetpack update to 5.7 last week. Can you please look into it?

I see there was issues with the last spring (https://www.ads-software.com/support/topic/4-8-2-the-contact-form-shows-html-tags/)

The page I need help with: [log in to see the link]