It does not work for me either. According to the bug report, it may be due to something related to the language, but even changing it, it still doesn't work
I also uninstalled the Google app. And I have reinstalled it, but the wizard does not work, it does not allow to activate the selector. neither with erasing data etc.
the bug is that if you open WhatsApp and start typing, if you lock the screen, for example, when typing again, the keys do not respond, they are pressed but the text does not appear
As far as I know, from what I read on the web, once you enter the EDL mode you simply connect the phone to the PC and flash the original ROMs with the official MIFLASH tool. (remember to have the drivers installed, etc.)