I have found the DVA website very buggy. It opened 2 accounts for me after saying the site was down for maintenance. Every time I have logged in (not in the middle of the night), I have come across at least one "down for maintenance" screen.
I was able to enter 10 Disney Gift Cards last night. It did error out after 4. Thankfully the money didn't get lost and was still on the gift card. I closed the Firefox browser and opened Chrome and was able to add the remain 6.
While the website is full of glitches, I could then turn right around and buy
Disneyland tickets immediately after entering all of the gift cards. We are going to a conference at the Disneyland Hotel, and the discount conference tickets website only allows 1 gift card per a transaction. I entered my DVA number in the Gift Card box and was able to purchase the tickets no problem.
A few errors on the DVA website was well worth saving 32% on park tickets!