Hi,
I’ve installed the latest version of the HubSpot plugin into the latest version of the Wordpress install, and after logged and the tutorial, it gives me a page asking to login again.
I cannot set the plugin because it request the login again with the popup. For one second I see the features of the plugin on the left bar, but after it closed itself and request the login in a loop.
I am using Firefox on Mac
Can you try using an incognito tab or a different browser? I’ve seen privacy extensions like Privacy Badger cause conflicts when using Firefox.