Google: "Error" "BadAuthentication" -- apparently different problem than before?

[kauffy]

Describe the bug
I am running a HAOS system in a VM on a NAS. When I try to use the HACS Google-Home integration, it won't accept my username + apppassword. I have 2FA turned on and tried several apppasswords, as well as the username both with and without the @gmail.com.

To Reproduce
Download and setup the Google-Home repository in HACS.
Go to add a new integration.
Enter my full gmail address for the username.
Paste in an app password from Google.
Hit "Submit".
A split second later, I get the message:

Username/Password is incorrect. If your google account has 2FA enabled please generate app password (https://myaccount.google.com/apppasswords). If authentication still fails refer to https://github.com/leikoilja/ha-google-home#troubleshooting

Expected behavior
The service would connect to Google and then discover the Google Home devices I have on my network.

Screenshots

Additional context

(MainThread) [glocaltokens.client] Initializing new GLocalAuthenticationTokens instance.
(MainThread) [glocaltokens.client] Set GLocalAuthenticationTokens client access_token, homegraph, access_token_date and homegraph_date to None
(MainThread) [glocaltokens.client] Set GLocalAuthenticationTokens client username to "f *******************", password to "z **************", master_token to "" and android_id to
(SyncWorker_9) [glocaltokens.client] There is no stored master_token, logging in using username and password
(SyncWorker_9) [glocaltokens.client] There is no stored android_id, generating a new one
(SyncWorker_9) [glocaltokens.client] Generating android id ...
(SyncWorker_9) [glocaltokens.client] Generated android id: bed9ed3a0e0bc155
(SyncWorker_9) [glocaltokens.client] [!] Could not get master token.
(SyncWorker_9) [glocaltokens.client] Request response: {'Error': 'BadAuthentication')
(MainThread) [custom_components. google home]