Family members not able to play online

Have You talked to Xbox Support to know what happened?

To my knowledge, these Games for Gold games are not available for purchase to secondary members of a Gold Family Pack. You can only get them as the primary member of the family gold pack. The only alternative I see is if your family members wish to play
these games you can download it to 1 console initially and all the profiles on that console can play it online or offline. They just wouldn't be able to play the games on multiple consoles.

Yeah I was trying to play with family member 1 on 1 and we couldn't connect to each others games. I was able to online myself but not with them.?

Hi

When you say share account, I assume you mean you have a Home Xbox set and not using the same account as that won't work.

If something has changed and your cousin has changed his Home Xbox designation, then you would lose the ability to play online as his account has the Gold subscription.

You can contact Xbox Support here: support.xbox.com/contact-us but they will only be able to offer limited support as your account doesn't have Gold and they can't help with your cousins account unless they call.

If I understand correctly, you and your cousin are trying to use the same Xbox Live profile. I'm not sure what you used to do but it is not possible for two consoles to be logged into the same account at the same time. It is possible however for two separate
Xbox Live accounts to share one Gold membership and games bought on another account.

The link for support is here if you want to contact them.