Roblox, Xbox Receipt Help

Thanks for trying to help I don’t know if it’s a hundred percent clear what I said. But at the time of making my Roblox account my dad didn’t put an email so I can’t use the account on my other devices beside the Xbox so I can’t sign into my account I contacted customer support and they said I need proof of owning the account and asked for a Roblox purchase receipt here is what they said “Please reply to this message with a copy of your Roblox, Xbox purchase receipt. You may send us your emailed receipt or a screenshot of your Roblox, Xbox purchase receipt.” the thing is I don’t know what the purchase receipt is because you don’t buy the game because it is free.

And what do I tell them that I need the receipt of the Xbox purchased in February 28 2017 and how do they know it's me

So If I ask them they can give me the receipt from 2017?, and I have the receipt from the other Xbox that I purchased in 2021 will they accept that?

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this Katis24

Do you need the specific receipt for the console itself?
If that the case, where did you purchased this first Xbox?
From Microsoft store / Xbox.com website or did you purchased the console from a third party store like Walmart, Amazon, Best buy etc?

You're welcome!
Hope they can give you a copy of the receipt as soon as possible

Don't hesitate to reach the community forums if you need help in the future
For now take care and have a good day