how to Change country/region
I have tried to change the region of my AppleID from USA to Thailand but country/region not active
There are some things, that might keep you from changing the country at this point.
If this does not work, you'll have to contact Apple Support about that, only they can look into your personal settings.
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- Spend any store credit remaining on your Apple ID. Learn what to do if your remaining store credit is less than the cost of a single item.
- Cancel any subscriptions, including Apple Music, and wait until the end of the subscription period.
- Wait for any memberships, pre-orders, movie rentals, or Season Passes to complete, and wait for any pending store credit refunds to process.
- Make sure that you have a payment method for your new country or region.
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If you can't complete any of the steps, can't change your country or region, or you have less store credit than the cost of a single item, contact Apple Support.
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copied from: Change your Apple ID country or region - Apple Support