My client is in another country. When I try to get the refresh token as described here https://github.com/googleads/googleads-php-lib/wiki/Using-OAuth-2.0, it asks me to log in. The client gave me the Google account credentials but Google then labels it as a suspicious login and wants a phone number and won't let me in!
I even sent the client the URL obtained by running GetRefreshToken.php, and they visited the URL and sent me back the refresh token. When I tried to use the refresh token, it gave the error
An error has occurred: {
"error" : "invalid_grant"
}
The refresh token is working for the test MCC account that I created myself using a throwaway GMail account. I think it would be silly to have the client set up a development environment and run the code themselves to get the refresh token.
