options in checkbox under instead of next to the checkbox

Don’t know why, if it since updating wordpress or contact form plugin, but now the options assigned to a checkbox item appears under it instead on the right.

You can see what I’m trying to see in this page:

https://www.sientemarruecos.viajes/viajar/marrakech-escapada-gusto/

Is there any way to change this?

Thanks a lot in advance