Back & Next button takes user to middle of form intead of top.

Another question - excuse me - the form is long, and when I use the back
and forward buttons, it goes to the next page but not to the top, instead
to the middle near the bottom. Is there a way to go to the top of the next
or previous page? We do have tabs widget at the top but they do need to
use the forward/back button to save their progress.

Instead of the iframe method, please try our Javascript embed method.

https://www.jotform.com/help/34-Adding-a-Form-to-a-Web-Page 

Please let us know after changing the codes so we can also check. Normally, it should go to the top. If the problem is the same while using the default embed codes, we will create a ticket about it.