Hello Pehrsson, Andreas,
I am glad that you were able to resolve your issue, and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to accept the answer.
Issue:
- Metrics are not showing on the Data Estate Insights page in Purview even though the data catalog is populated
Solution:
- The generation of reports took some time to complete, so the metrics didn't show immediately(If there is a large amount of data to process)
If I missed anything, please let me know, and I'd be happy to add it to my answer. Feel free to comment below with any additional information.
I hope this helps!