Hey Ben. Sorry for the delay in answering your question above. You asked:
Hi, we've been accepted for the preview and can view the productivity score dashboard but we are having trouble with endpoint analytics. When we follow the link to enable it it takes us into MS Endpoint Manager but then we get a message with "You do not have access". Is there anything that would be causing it? We use hybrid Azure AD joined devices and Intune for management.
Take a look at the prerequisites for EA preview here:
https://docs.microsoft.com/en-us/mem/configmgr/core/misc/user-experience-analytics-preview
Keep in mind, however, that even if you meet all those prereqs, EA is in private preview. Each customer participating in the private preview had to submit their request back in April and then had to be manually flighted by the product engineering team in order to see the data. At present, only 4 customers globally are in that private preview.
The good news is that we are shooting for moving to a public preview for EA in late June, sometime on or after June 22. In the meantime, take a look at that page I linked above and make sure that you have the technical prerequisites covered, so that you'll be ready to go when we move into public.