Access Denied for Manage Subscriptions

@ceseia,

I tried to reproduce the error, but was unable to. Is this still a problem for you?

I have the same problem.
I uninstalled and reinstalled message subscribe and message ui modules but still no change.....(without danse)
But if I install danse , I can access my message subscription. :))
I think danse provides something missing in the subscribe module.
I stopped using it because there is no filtering of notifications in the danse module. I left danse and it came up again :))
Installing danse would be a silly solution if I want to use the message subscribe module.

I tried something but no success.
But I can access to this path... "/user/1/message-subscribe/subscribe_user" or "/user/1/message-subscribe/subscribe_node"

/user/1/message-subscribe .... is still access denied....

The path /user/1/message-subscribe, uses a custom access method, SubscriptionController::tabAccess.

Are you user1?
Does the user have 'administer message subscribe'?
Can you see the view in /admin/structure/views ?