Thanks so much for using community!
You should be able to use an iframe embed on your site to display your survey and utilize the save and continue feature. The issue with this however, is that the link sent to the respondent will be a SurveyGizmo link.
If this is an issue, the only other option would be to set up a private domain:
This will allow you to use save and continue and preserve a similar domain to zoom.se
I hope this helps!
Thank you very much,
“I rather like the smell of absurdity in the morning.”