Welcome to the Bunnings Workshop community. It's fabulous to have you join us, and thank you for sharing your question about your bistro blind.
In order to give our members a better idea of what's happening, would it be possible for you to post a few photos of your bistro blind and the wall mount anchor? Once we see the picture it will allow us to assess if there is any damage. We can then make recommendations on how to repair it.
If you need a hand posting the photos, please let me know.