Suspicious sign in prevented on logging in to google adwords

[Cap'n of d'Ship]

We're using the old style of authenticating to google using the login + password for the google master account.

We had an application before that does not have any issues but now, we are setting up a new server on AWS.  On the first time that we try to log in to google adwords (to use the API) from that server, adwords doesn't allow us and sends an email saying there's a suspicious sign in prevented.

Should we register our public ip address to google adwords so it will allow the ip everytime?  Or, what should we do?  

thanks!

[David Torres (AdWords API Team)]

Hi,

My best recommendation to you will be to migrate to OAuth2, in the short term you'll need to resolve the captcha challenge in the server. Our client libraries have examples on how to deal with captchas.

Best,

- David Torres - AdWords API Team