If you have received an email that looks like the following, don't panic, it's just an automated system email from Amazon to make sure that you are happy for ChannelGrabber to be authorised to access your seller account.
Please follow the instructions in the email to re-authorise ChannelGrabber to access your account, preferably BEFORE the date provided in the email, to ensure there is no interruption to your Amazon services in ChannelGrabber.
Dear Company Name,
For your security, we periodically reach out to make sure that only developers you are actively working with are allowed to use Amazon's Marketplace Web Service (MWS) on your behalf.
The developer listed below has access to your account that will expire soon. Please either confirm or revoke the developer's access to your account on the MWS Developer Permissions page. If you do not confirm the developer's access by DD-MMM-YYYY, it will be suspended.
Developer ID: 878241238191
Developer nickname: OrderHub / ChannelGrabber
Access expiration date: DD-MMM-YYYY
Amazon Marketplace Web Service