Solved
Cant sign in to account in platform debug plugin
when clicking 'sign in' in plugin top right, the sign in pop up appears, briefly spins and disappears. sign in fails.
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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