mkt_tok isn't appearing when I click through to my landing page
I'm stumped - I have an email newsletter that links to a Marketo landing page, and when I click through (the real email, not a test), the mkt_tok doesn't appear in the URL. This is problematic because we're hoping to pre-fill form fields on the landing page.
I've confirmed that pre-fill is enabled on the form fields. Plus, the other non-LP links in my email DO have the mkt_tok appended.
I did try to also use query parameters to pull in the data (like &First={{lead.First Name}}&Last={{lead.Last Name}}&Email={{lead.Email Address}}) and that didn't work either. When I remove them, I still have the same problem.
What am I missing??