I'm trying to register my Relay G10T I bought to use with my new Spider V amp. The serial number box puts an auto fill of "21W110M" and expects the customer to fill in the rest of the serial number. But my serial number does not have that. It starts with W131M. There is no "21" so I put it in just like it's on the box. Got an error. So I included the 21, still an error. I've tried 14 dozen ways to enter it but I still get an invalid serial number. Yes, I used "0" and not O's where needed. Now what do I do?