PSA for everyone having issues after the update
For Android users who cannot play after the update, here are a couple of backup solutions:
If you can make it into the game, but the UI is messed up, download locale.pck and pack.pck for the current patch from this link: https://gofile.io/d/EwhTsa
Replace the old ones located in the internal storage in /Android/data/com.linegames.dcglobal/files/ and see if the issue is fixed.
If you can't see the data folder, use a file explorer that grants you access to it like
X-plore, File Manager Plus or Solid Explorer.
If you have attempted to reinstall the game and are stuck at the downloading stage because it keeps continually failing, you can download a copy of the full asset folder for the current patch (low resolution, no voices) here: https://gofile.io/d/emC73n
Go to Android/data/com.linegames.dcglobal/files, back up the !config.sav file to save your local settings.
Delete the old com.linegames.dcglobal folder in Android/data, then move the unzipped folder into Android/data. Put the old !config.sav file back in the new com.linegames.dcglobal/files folder and start the game.
EDIT: for iOS users, there are no such options available. You might be able to play on an Android emulator if one of the link options on your account works on Android (everything except the Apple account)