How do I allow the activitypub plugin access?

I have tried Allowing these namespaces, ActivityPub and activitypub, but that doesn’t work, I have tried white listing IP addresses, but that doesn’t work. How can I ActivityPub to work?

Request to REST API denied
/wp-json/activitypub/1.0/users/0/inbox
Request to REST API denied
/wp-json/activitypub/1.0/users/0/collections/featured
Request to REST API denied
/wp-json/activitypub/1.0/users/0/collections/tags
Request to REST API denied
/wp-json/activitypub/1.0/users/0/followers
Request to REST API denied
/wp-json/activitypub/1.0/users/0/following
Request to REST API denied
/wp-json/activitypub/1.0/users/0/outbox

Add activitypub to the list “Allow these namespaces”.

Use the Activity log to find out why exactly your request were blocked. Select “Request to REST API denied” from the drop-down list and click “Filter” (1). Check the grey status labels (2). They tell you why requests were blocked. If you see “Access denied by plugin settings”, this means you need to change REST API settings on the “Hardening” tab to allow those requests.