Intermittent "Your session has expired" Error

I was hacked several weeks ago. Thought I fixed everything.

But now I have an odd, intermittent issue that may of may not be related...

When someone uses my form for the first time, they get this message:

• Your session has expired. Please log in again.

There is no form with this name or may be the form is unpublished, Please check the form and the url and the form management

When the try a second or third time, it works fine.

The form worked fine for several years. The issue just started.

Any idea what could be the issue?

Hi psasso,

Is the form set to allow registered + logged in users only?

I don't know any reason why this would change. I sometimes see the same message when logging into site administration but rarely with forms.

Bob