Error 400: redirect_uri_mismatch The redirect URI in the request

When I try to connect to google auth for the SMTP Post plugin this is what I get, I tried adding this url to redirt etc and followed steps at https://www.cloudways.com/blog/post-smtp-mailer-fork-of-wordpress-postman-smtp-plugin/ but I still get this error when I try to connect, when following the steps the connectivity still failed for the first 3, maybe that is the problem?:

Error 400: redirect_uri_mismatch
The redirect URI in the request, https://www.moviemakingbay.com/mmtb/wp-admin/options-general.php?page=postman, does not match the ones authorized for the OAuth client. To update the authorized redirect URIs, visit: https://console.developers.google.com/apis/credentials/oauthclient/957712741108-4v9135pedfpt7dheci4f6e5ptbj1rlr3.apps.googleusercontent.com?project=957712741108