Solved
Sign in is not working
I'm logged in to AEP and Data Collection with my Adobe ID. When I click Sign In on the Debugger (Chrome), a log in screen pops up, autocompletes, and closes. Then I'm still not logged in.
Please see the official reply from Adobe: https://experienceleaguecommunities.adobe.com/t5/adobe-experience-platform-data/sign-in-issue-will-be-fixed-in-v1-6-4/m-p/752695
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