If the country where the Apple account is located is changed to Thailand, you can download the APP in Thailand. In iTunes, check the account App StoreApple ID: your email address, click and enter the password. There is a place that can be changed.

TrueMoney, Thailand's largest e-wallet, allows users to use their TrueMoney account to purchase applications and digital content on Apple platforms such as App Store, iTunes and Apple Music, and complete payment.