tomrarich on "[Plugin: Visual Form Builder] Paypal not working"

VFB Pro v 3.1.8 plugin and
VFB Pro - Payments v2.0.8 DOES NOT WORK on my website:

See culinaryguild.org/membership-application-2/

When I click the Submit Application button it computes for some time and then goes directly to the Thank-You page.

Please help.

https://wordpress.org/plugins/visual-form-builder/