Out of my 12 mnemonic words
The first word '잠깐' is in the bip-39 Korean mnemonic word on github.

However, it seems to be a mnemonic bug that does not recognize shift+r=>ㄲ, which is an input method only in Korean.
It may be the Bip-39 Hangul mnemonic bug
When creating 12 mnemonic words in your wallet
It could be a bug that occurred
There are obvious errors or bugs

Usually, whatever mnemonic phrase you enter into the BIP-39 converter,
When it is the default BTC-bitcoin value, it is normal when the attempt and the root key are displayed.
When entering 12 mnemonic words, the first error that appears at the top is

'잠깐 not in wordlist, did you mean able? '

Coin List
At the top when eca-electra is selected

'Invalid root key'

Is displayed

If the eca mobile wallet on Google Play still works the same as before server down, it is definitely a wallet bug or a mnemonic bug.

If the server-down mobile wallet has been left unattended on Google Play, the developers
have to make changes with a sense of responsibility?