Is this a PDF or Web form? Which browser/platform are you seeing this problem?
I am having the same problem. I just made a new form (online not PDF) using Safari and the form works. My test responses are showing up under the view responses tab, BUT EMAIL NOTICATION IS NOT WORKING. It's not sending the "submitter" a copy of their responses or the "owner" of the form submitted responses. I use these forms daily so i know this is a new issue and i'm 100% confindate that i made my form the proper way. HELP!!!!!
We are currently working in this issue which started this morning PST. We hope to have the Email Reciepts and Email Notifications (as well as the Save Web Form emails) working ASAP.