UTM tags not sending unless logged in as admin

HI,

I’m using Contact Form 7 to send UTM tags from the url where the from lives. For example, I’m sending the utm_source parameter through the form by putting this in the form:

[hidden utm_source default:get]

These values don’t get passed unless I’m logged in as an administrator. Is there code I can add in my theme or something to let the utm parameters pass through the form when a subscriber is logged in? This doesn’t seem like it should be the default behavior for Contact Form 7, and I haven’t seen much else online regarding this problem.

Thanks in advance!