when i try to add jotform tab to my facebook page it wont let me add my facebook acct

I checked the Facebook tab embed and it looks to be working at this time.  Make sure you are logged into your Facebook account prior to publishing the form.  If that still does not work, you can try the alternate method of adding your form to Facebook:

https://www.jotform.com/help/82-Adding-a-form-to-Facebook-Custom-iFrame-App-