Update on November 25, 2021:
This seems to be an ongoing issue with Google's service. We're keeping a close eye on it, and will update this article if there are any further developments.
Starting at 15:20 GMT on November 12, 2021, we learned about an issue with our Supermetrics Data Studio templates. Users might see an error reading “(Unknown) data sources” when trying to use a template.
This issues only impacts Supermetrics Data Studio templates, and shouldn't affect any functions in users' reports. We’re investigating the issue and will update this article with more information as we have it.
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We apologize for the disruption this has caused.
As always, contact our support team if you have any questions or concerns. They're aware of the situation and ready to help.