How do I get form to display in Firefox?

[Laura_Brooks]

https://www.insightsquared.com/contact/ 

The form doesn't show up only on Firefox (mac).

Can't figure out the fundamental issue - no clear procedure to follow in researching this issue. 

[SanfordWhiteman]

You need to do 2 things:

1. Use an LP domain to load your forms. See https://nation.marketo.com/community/product_and_support/blog/2019/03/26/make-your-form-embeds-happi... 
2. Use an additional tweak to successfully receive form submissions in Firefox (perhaps obvious, but actually a different stage of processing). See Really, finally dealing with the Marketo Forms vs. Tracking Protection issue