Try Google Less secure apps configuration
Log in to your Gmail account through a web browser and enable access through less secure apps . Less secure apps can make your account more vulnerable, Google will automatically turn this setting off if it's not being used. However, bypass this security setting with a configuration tweak within your Google Email Account .
How "more secure apps" help to protect your account?
Which level of access you're giving the client before you connect your Account.
Client access only a relevant part of your Account, like your email or calendar.
Connect your Google Account to the client without exposing your password.
Disconnect your Google Account from the client at any time.