Did you read my post above yours?
yeah? i read it, doesnt make sense.
There are two versions of the web app available to you.
A ‘hosted’ and a ‘local’ one. The issue affects only the ‘hosted’ one.
Use the ‘local’ one until it gets fixed.
but how can i send an invite to someone who does not have a server? They cannot see it?
This doesn’t have anything to do with the issue described in this thread.
the title of the thread says “User & Sharing setting not accessible” which is what i am unable to see?
And I have explained to you how you can access it above.
so i need to make a new thread if i do not have a server? 
I don’t understand what you are saying.
This thread is about the menu item ‘Users & Sharing’.
Not having access to a server in general is something different and, yes, will require a separate thread.
When will the fix be available? My server is not hosted locally so i dont have access.
“A few hours” I wrote above.
You could use a tunnel to access the local web nonetheless, just like you used for the initial set up.
scroll down to “on a different network”
for instance. If i just made a fresh plex account, so i can link it to a friends server by sharing but i cannot see the invite on my account because the page is not accessible. I do not have a server to access. I am using the web version only.
Then you are probably logged in to the newly created plex account and not your own. Therefore you cannot invite anyone.
But as I said: different issue. Create a separate thread please.
this problem is on a whole, server or no server. the web app does not work. if you do not have a server you doomed, if you have a server you are half doomed, you can send an invite, but if you are sending it to someone without a server they cant recieve it anyway because they cant login locally, only via web, however i will just wait its an obvious issue. im sure someone behind the scenes will fix it. thanks.
As I wrote above: “A fix for the hosted web app will be released in a few hours.”
Thanks Otto. I used the local server version and it worked perfectly thank you.
I think there is alot of confusion on how plex works in this thread.
Thanks Otto, you’ve explained it perfectly.
“FIX COME SOON” 
Can we get an update on this? I no a few hours ago it was said it will be a few hours but wondered if there is any idea how soon?
So a few hours is 5 hours? - Jeez
This is working for me now.