There was a similar post here as another user was having the same issue. It turned out that Natwest made some minor changes to their forms which broke the feed. We updated this and re-published to Chrome last Friday. I can confirm this now works for me on our test account.
Can you go into your Chrome Settings and click the Extensions option. You should see the QF Bank Feeds extension, can you confirm you’re on version 1.27?
If you aren’t just uninstall it and reinstall from here.