Background Image not updating using ACF fields

Using an ACF field to connect an image as a background image for a section on my page. The original image has become stuck there even after I’ve replaced and deleted it.

The image in question is the first under the nav bar. How can I get this to update?

https://www.altorank.com

https://www.altorank.com/wp-content/uploads/2020/07/K2_2006b-1.jpg
This is the image that exists but shouldn’t, it’s not even there when I search for it in my hosting.

Try updating

2.4.0.1: Fixed ACF issue where CSS was not being purged after updating ACF fields.