Ok, so I got my key installed on the camera and I'm good to go with that. I sat down to fill out the Rebate form online and get the ball rolling on that, but after I enter all the info it wants me to "check for Rebate" and acknowledge the terms and conditions. When I do that, it tells me to check my serial number, date or something else. It says they could be wrong or this could be a duplicate entry. I can't for the life of me figure out what's going on. I tried to call the rebate phone number and it just put me on hold for a few minutes then told me the call couldn't be complete and to call back. I guess I'll have to wait until Monday...........

Has anyone had any issues with filling out the rebate?

Here's the site.
https://www.merprorebates.com/merlin/sonyrebatesunsecure?mgr=Enrollment&command=getEnrollmentForm&promotion=1170

For the serial number field, did you use the camera (X 70) serial number?

I had the same problem. If you look at the Home tab of your linkit says in red to use the cameras 's serial number. Once you get it to accept the all the information, there is a link to create the page that you have to print out and include when you send in the receipts and UPC codes.

For the serial number field, did you use the camera (X 70) serial number?

Yes. Am I supposed to give the purchase date and dealer name of the camera or the upgrade?