[kmail2] [Bug 405185] New: Can't add Gmail account - Google replies "not verified by Google"

[Jesse DuBord]

https://bugs.kde.org/show_bug.cgi?id=405185

            Bug ID: 405185
           Summary: Can't add Gmail account - Google replies "not verified
                    by Google"
           Product: kmail2
           Version: 5.10.3
          Platform: Neon Packages
                OS: Linux
            Status: REPORTED
          Severity: critical
          Priority: NOR
         Component: config dialog
          Assignee: kdepim-bugs at kde.org
          Reporter: jesse.dubord at gmail.com
  Target Milestone: ---

Created attachment 118632
  --> https://bugs.kde.org/attachment.cgi?id=118632&action=edit
screenshot example

SUMMARY

When I try to add my Gmail account to Kmail, it won't succesfully add the
account. Signing into Google gives an error from Google. 

STEPS TO REPRODUCE
1. After first-time execution of Kmail fresh after install (or going to
Settings > Configure Kmail > Accounts > Receiving > Add Mail Account), run
through the wizard to add an account
2. Sign into Google with your Gmail credentials
3. Click Next

OBSERVED RESULT
Google gives the following error: "Sign in with Google temporarily disabled for
this app. This app has not been verified by Google yet in order to use Google
sign in."

EXPECTED RESULT
For the wizard to successfully configure my Gmail account. This issue only
seems to occur in Neon; it doesn't happen in Kubuntu.

SOFTWARE/OS VERSIONS
Windows: 
MacOS: 
Linux/KDE Plasma: KDE Neon 5.15
(available in About System)
KDE Plasma Version: 5.15.2
KDE Frameworks Version: 5.55.0
Qt Version: 5.12.0

ADDITIONAL INFORMATION

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