BuddyPress.org

@demetrius-pop why are you asking about this user? I see that they are both a member of your site and have also posted a question here on BP support, also if you don’t know who they are  it tends to suggest that […]

@demetrius-pop ah the permissions problem. For the multisite installation, activating BuddyPress network-wide resolved that for me.

Deactivate BP – from main site or subsite dashboard. Then go to Network Admin […]

@demetrius-pop rename the buddypress folder in wp-content/plugins to e.g. buddypress-xxx and then check if you can access wp-admin
– Was BuddyPress installed in main site or subsite?
– What plugins are you using?