Got two messages from Gmail about the time Scheduler had had several weather events which it should notify about as well as startup. The message was:



Sign-in attempt was blocked
Someone just used your password to try to sign in to your account from a non-Google app. Google blocked them, but you should check what happened. Review your account activity to make sure no one else has access.
Check activity
You can also see security activity at
https://myaccount.google.com/notifications
You received this email to let you know about important changes to your Google Account and services.
2021 Google LLC, 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA

Checking the link above Check Security and it says the following:

Less secure app blocked

Google blocked the app you were trying to use because it doesn't meet our security standards.Some apps and devices use less secure sign-in technology, which makes your account more vulnerable. You can turn off access for these apps, which we recommend, or turn on access if you want to use them despite the risks. Google will automatically turn this setting OFF if it's not being used.
Learn more


As far as trying another email outside of Gmail I have tried a number of times using my CenturyLink email with similar results.