There seems an issue, with google mail and manager email module.
I’m using google email as my sender for invoices, with allow less secure app access turn on.
Previously there is no issue sending emails until I’ve changed my password at google. Then I change the password at manager email setting as well but still can’t get through.
as Alternative solution I use my secondary email google account. Never change password before, and it works. However, with odd feedback.
like the following text
@lubos… you might need to look into it. probably with authO implementation.