If you received a message from Whatagraph asking you to verify connection to a data source, chances are that your access token has stopped working. Do not worry – this happens occasionally and can be easily fixed.
Some of the known reasons for the access token to stop working are:
Access token has expired due to security reasons.
One of the users has changed the password.
Here's how to re-verify your Mailchimp source:
Note: Mailchimp accounts do not have historical data so please do not delete them as you might loose all the performance data collected!
First of all, make sure you are logged into the Mailchimp account on the same browser with the same email that appears next to the source error. Proceed by clicking the Verify account access button in the Account Access page.
If this does not take care of the issue, please get in touch with us via live chat and we can get to the root of the problem!