Thanks for reaching out and welcome to the Community.
Please note that the main Spotify app in South Korea is only available to Premium users. To that end, could you please make sure that your subscription was correctly activated. You can check up its status on your account page here.
If it shows that you have Premium active, we'd recommend running a clean reinstall on your device? This step lets you start afresh with the latest app version by removing any corrupted files from previous installations.
Hope this helps. Let us know how you get on.
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