Don’t worry, this is easy to fix. If you've accidentally authorized the wrong Google account, or synced an incorrect AdWords account with WeatherAds, simply go through the following steps to resolve the issue.
Go to this page: http://app.weatherads.io/Manage/AdPlatforms and de-authorize AdWords. (hit ‘remove’ button next to AdWords).
Once this is done, please go to https://myaccount.google.com/permissions and check if WeatherAds is listed in there. If it is, please remove it from your apps. Please make sure you are signed in with the correct Google account when you are performing this step!
Once you have completed these steps please return to this page: http://app.weatherads.io/Manage/AdPlatforms and re-authorize your AdWords account. Then enter the customer ID associated with that AdWords account. Please ensure it is the correct customer ID.