How to's and problem with embedded forms

First of all, I only recently signed up with Zoho Creator and so far it's awesome. I manage a non-profit student organization website on the school server and does not have access to the SQL database. Creator has solved that problem.

However, I have a question and would really appreciate it if someone could point me in the right direction:

After embedding the form on my site, if I log out of Zoho then the embedded form will be stuck in loading mode. I can see the form title, and a little spinning circle but the form fields do not load. I made sure that the application is public and that public user groups have been shared with the form. If I log back in then everything functions normally. Any idea as to why this happens? How do I fix it?

Also, is there a way to copy a tab? So that the new tab created is a duplicate of the one being copied.

Appreciate it.