Wrong Date for Gavin DeGraw Concert

I believe this may be the wrong date for the concert. I checked on the Sovereign Arena webiste and there is another event scheduled for December 6th @ 7pm.

I called the ticket line for the Arena and the customer service rep stated that there wasn't a Gavin DeGraw concert on their schedule for that venue.

I do not have any idea how to contact the webmaster for this website to inquire about the date of the concert.

Rebecca