Can’t access any account of the game

I accidentally initiated an account deletion for one of my mini Clash of Clans accounts to clean up my Supercell ID list. Now I’m completely locked out of the game on my phone, it won't let me switch accounts or even reach the main menu.

Here is what I’ve tried so far:

• Clearing the app cache and data
• Uninstalling and reinstalling the game
• Contacting in-game support (it throws an error every time I try)

Since deleting app data doesn't wipe the cached Supercell ID login status on iOS/Android device storage, the game keeps trying to load the pending-deletion account on startup and freezes.

Is there a workaround to force the game to open a fresh login screen, or another way to reach Supercell support outside the broken in-game help menu if I forgot the email?