Look below for my question.

Thank you for contact us! I'm Anderson, an Independent Consultant and a Microsoft user like you.

good evening

What can prevent players from joining in multiplayer is the type of NAT.

What is NAT:

NAT is nothing more than a protocol that translates IP addresses and TCP ports from the local network to the Internet. In other words, the packet to be sent or received from your workstation on your local network goes to the server where your ip is exchanged for the ip of the server and the replacement of the ip of the local network validates the sending of the packet on the internet. When the package returns, the same thing happens, but in reverse. This ensures that the package reaches its destination.

Why is NAT important?

Your NAT type, combined with the NAT type of other players, determines whether you can successfully use multiplayer games or group chats. The following tables illustrate the differences between NAT types. And based on your NAT type, who you can play multiplayer games with, and who you can listen to in a group chat.

OPEN NAT

You can chat with other people, as well as host and participate in multiplayer games with people who have any type of NAT on the network.

MODERATE NAT

You can chat and play multiplayer games with some people; however, you may not hear or play with others and will likely not be chosen to host a match.

STRICT NAT

You can chat and participate in multiplayer games with people who have an OPEN NAT type. You cannot be chosen as a match host.

NAT UNAVAILABLE

You will not be able to use group chat or connect to multiplayer games on some titles on Xbox Live.

Either you have problems with this protocol or your friends may have them.

each platform has different solutions, and you would first need to identify which players have nat other than open.

I attempted to refund the second time only a few days after New Years, January 4th or 5th, so that’s not the problem. It seems that they just don’t let you attempt to refund something again after being denied.

No as.mentioned if you read the refund policy it's limited to significant play or 14 days

That's standard

Only.physical.products.is.30.days

https://support.xbox.com/en-CA/help/subscriptions-billing/buy-games-apps/refund-orders

We understand that sometimes purchases of digital game products don’t go as planned. When that happens, we’ll help you request a refund.

Refunds are typically issued for requests meeting the following criteria:

• Requests are made within 14 days of the purchase date
  
• Requests are for games in which you haven’t accumulated a significant amount of play time less then 2hours
  

But you can still request a refund after 14 days, it’s just yellow. It won’t even let me tap it.

When did you make.the purchase.?

You can't.request.a refund after 14 days you cannot make a refund request now since it is past 19 days since Jan 1st