Not all fields show up in conformation mail

Suddenly there are some weird things happening to my form and I think it has something to do with this plugin. The output of some fields do not appear in the confirmation e-mail. When disabling the plugin everything is fine.

The form is located here: https://www.klassenverhaal.nl/bestellen/

I’m getting this error in my console:
Uncaught Error: Syntax error, unrecognized expression: label[for=]
jquery-latest.min.js:2

Any suggestions?

https://www.ads-software.com/plugins/gravity-forms-placeholder-support-add-on/