RSVP with custom field for GDPR consent (problem with link)

I am using Event Tickets Plus for creating a registration form and for asking some additional information about the attendee. For GDPR consent I have added a checkbox with privacy policy notice. And I need to link this text to our privacy policy page (this is mandatory in Germany). But unfortunately html anchors in the registration form produce strange effects, like that the link spreads out and uses the space of a whole column.

I am not able to get this fixed with CSS, it is not working.

Please I need a hint for adding my required information (hyperlink) into this form. I would prefer not to make a template override for that and hope for a easier solution.

Thanks for any idea!