fix: Adds basic KR/EC support

[kamronbatman]

• Adds basic KR/EC login support
• Adds support for EC client versions
• Fixes a few minor bugs

Part of this was handled in #1506 , #1507

[CLAassistant]

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✅ kamronbatman
❌ CA5A
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[kamronbatman]

Let's revisit this another time.