Access Token for managing huge permissions

Hi , I have registered id with auth0, however I would like to authorize my users with each screen actions permissions, so for that I am creating each screen wise permissions (Module:Screen:Permission) and its count is going to me like upto 2000,
Now I am facing issue when assigning the permissions to the user, because when I assign 1000 permissions and then add more 1000 permissions then the permissions are not getting assigned , can you please help me in this regard as how can I handle this type of situation.