Hi Richard Van Der Helm,
Thank you for using our services. Could it be that you have enabled additional verification for Google analytics? If that's the case, then you'll need to use your application-specific password instead of your verification code. Please take a look at this article
which discusses the topic in detail. If any problems persist, please do not hesitate to get back to us. I'll be glad to assist you further.
the Telerik team
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