I’m not sure what the “provider user identifier” is? If it’s something in WordPress Social Login, try asking the question over at their support forum. They should be up to speed on it.
You can use add_action() anywhere. Whether or not it executes the functions attached to it is another question. Take the add_action() inside your function for example. It’ll only execute custom_bp_subnav() on the condition that $loggedin == $displayed. Also the bp_ready hook must be running.
You could use WordPress as your CRM. There are quite a few plugins in the repo for that purpose. My advice is to set up a test install, try them out and see which one works best for you.
You will need to go through all of the BuddyPress communication channels available:
1. Private messaging
2. Public messaging
etc
Then when a user attempts to send a message to a user they have not been assigned to, disallow it to happen via one of the hooks BuddyPress makes available.
With reference to assigning a user to a user, this could be achieved via user meta.
1. Which forum are you using? If you migrated your forum content to bbPress, you’d have one login shared across both your forum and your (WordPress) website. Is that an option you’d consider?
You will need to make use of hooks and the strlen() function.
For example, at registration, in order to validate the username so that it isn’t longer than 16 characters, you can do this:
function my_username_validation() {
// Perform validation here using the strlen() function to check the field length.
}
add_action( 'bp_signup_validate', 'my_username_validation' );
If you don’t see the problem with TwentyFifteen activated, the problem is likely to be theme-related and, One Community being a premium theme, none of us here can see the theme’s code. Try opening a support ticket on the theme’s support forum.
In order to be able to post, you need a user ID. Unauthenticated users have ID 0 so you could build something based on that but I know of nothing that’s available currently.
This is simply the way your theme displays things on the page. If you’d like a sidebar on those pages, you can modify the templates. See the Template Hierarchy article for more info.
You’ll probably want to get as much info from the user as possible and then test again under those exact conditions. It could be a browser problem (I’m guessing here) or alternatively a caching issue. These are the worst problems to investigate, when everything works fine for you, but not for somebody else 🙁
