MSFS Working with one Microsoft account and not another

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Are you using Developer Mode or made changes in it?

No

Have you disabled/removed all your mods and addons?

Yes

Brief description of the issue:

The sim starts up fine, but when loading into a flight from the world menu it stops responding around 75% loaded. This only happens on one account but not another

Provide Screenshot(s)/video(s) of the issue encountered:

Detailed steps to reproduce the issue encountered:

PC specs and/or peripheral set up if relevant:

Ryzen 5 2400G, GTX1050ti, 16GB RAM, Honeycomb A, B, Thrustmaster TCA sidestick, Logitech Rudder Pedals, TrackIR, Mouse and keyboard

Build Version # when you first started experiencing this issue:

1.30.12.0


:loudspeaker: For anyone who wants to contribute on this issue, Click on the button below to use this template:

Do you have the same issue if you follow the OP’s steps to reproduce it?

Provide extra information to complete the original description of the issue:

This only happens with my active account, which has almost 2,000hrs. When I try with an old, defunct account it works perfectly. I purchased the sim on the old account, but shortly after purchasing it the email provider shut down, as such I can’t use this account anymore. Plus, I have a number of items purchased from the marketplace, so I need access to the sim on my new account

If relevant, provide additional screenshots/video:

You will need to contact Xbox Support to see about changing your email address:
https://support.xbox.com/en-US/