Add-ons not added in admin email

Hi,

I’m currently trying the “Yith Request a quote” plugin combined with “Yith Product add-ons” plugin, in their free version, before upgrading to premium version.

When i create a quote request, the add-ons options are not registered in email sent to admin. I only receive the name of the product variation, without the custom options selected.

Is it a premium feature only ?

Thanks for your help.