Can not integrate all FluentForm fields.

I tried to integrate a fluent form to Propovoice in the settings–Integration, but only part of the form fields show up in the fields selection. After checking and creating a new fluent form, I found that if the fields are in a two-column container, they will not appear in the Integration–fields selection.

My license is a Freelancer – Annual, activated well.

Please help to address this problem. Thanks.