I am trying to add a new user and it says: "Error, Please try again? An unexpected error occurred. Please try after some time."
Hi there, kquick.
Thank you for contacting the Community for support. It's my priority that you're able to add a new user in QuickBooks Online.
I'd be glad to help point you in the right direction so you're able to add a new user to your account. As an initial troubleshooting step, I recommend clearing the cache in your internet browser. Clearing the cache will allow you to work with a clean slate and resolve any performance and viewing errors that may be happening in QuickBooks Online. This article will walk you through the steps to clear the cache depending on which browser you're using: https://quickbooks.intuit.com/community/Getting-Started/How-do-I-clear-my-browser-cache-and-temporar....
Please feel free to let me know how things look after giving this a try. I'll be on standby.