This is not the experience we want you to have, @janathom.

Let's resolve the error your system administrator has received so you can access QuickBooks Online.

We recently had an issue with users that can't access their QBO account. They received the "Your administrator has not granted you access to QuickBooks Online Plus. Please contact your system administrator with any questions." error message. Our Product Engineering team is already aware of this and is now working for a fix. 

To check for any updates about this case, I suggest reaching back to our Customer Support. You can provide them with the case number so they can take a look at it and provide you with the information that you need to resolve this.
 

You can reach our Customer Support for QuickBooks Online (QBO) by going to the Help icon at the top right of the account. Follow the steps below: 

1. Go to the Help icon to connect to a live support agent. 
2. Provide us with some information about your concern.
3. Select the Contact Us button and provide some details about this concern, then on the Let's talk button. 
4. You'll now be provided options on how to connect to our Customer Support. 

Here's the contact the QuickBooks Online Customer Support team article for more information. 

That should get you back to business. Let me know if there's anything else that I can help with your account by leaving a comment below. Take care and enjoy the rest of the day.