Gold pass accidentally entered as Ultimate

You can try contacting support http://beta.support.xbox.com/contact-us

If they are able to revert the gold, keep in mind that in order to use the full 12 months of Gold, your son would either need to cancel his Ultimate subscription or wait for it to end before adding the code. Anytime you add a prepaid gold or game pass code
while having an Ultimate subscription, it will convert to Ultimate.

Appreciate the reply. Any ideas on what I can try or who to contact?

the gold converted the standard membership to the ultimate game pass, if this was a code you may not be able to get that refunded.

Standard Game Pass does not include Gold. Only Game Pass Ultimate does. So it will only convert if you enter a Game Pass Ultimate subscription.

Good Day

I've read many posts on converting Xbox Gold to Game Pass Ultimate but cannot find a specific HOW to do it.

My Game Pass Ultimate expired and I purchased an Xbox 3 month Gold Voucher. After entering the voucher, it gives me 3 months of Gold. It did not convert to Game Pass Ultimate and I cannot play the games although the gold is active for 3 months. What i am
looking for is a way or tutorial to convert the
existing 3 months GOLD to Game Pass Ultimate.

Thanks in Advance.