Can anyone help me here?

Twice now I have had phpFormGenerator folders & files disappear.  Yup, gone - poofed into space.   

I had a working survey up a few months ago, and recently when a member went to take it the link didn't work.  The "use" folder and files were missing.  I figured that I must have deleted it in error.  Since everything was messed up, I ended up re-installing phpFormGenerator and having to recreate the survey.  On 7/18 the new survey was up and running, and I got back 9 responses between 7/18 & 7/19.

Then tonight,  I attempt to make a new survey for a different customer and again the use folder and misc files are missing.  Only this time a couple of the missing folders show up in the trash can - but I cannot restore them because it gives back a "fatal error".

Can anyone please tell me what's happening??  Is there some hidden, freaky thing I missed in the setup that says "don't work too hard on the survey because in 48 hours it's going to self-destruct"??

Thanks in advance,
Maureen