Thank you for posting, @hz211. 

We add support for banks based on the number of customer requests, so I highly suggest you to also send a request by following the steps provided by Jen_D.

Once QBO successfully added Starling, you’ll just have to exclude the transactions by batch coming from the bank to avoid duplicate transactions.

You can refer to this article for more information: Exclude expenses from downloaded bank transactions.

Let me know if you need further help or assistance about your transactions by leaving a comment below. Take care and have a wonderful day!