Cloudflare with Backblaze bucket infinite redirect (301)

[k2n-Learning]

Hi,
So I’ve followed the following post:
https://help.backblaze.com/hc/en-us/articles/217666928-Using-Backblaze-B2-with-the-Cloudflare-CDN

I’m trying to use Cloudflare as a CDN for files in a bucket.

I followed the steps where I have set a CNAME and created a page rule:

And I added the following:

However when I try and access one of the files in the bucket I just get an infinite redirect:
For example:
https://b2.k2nlearner.com/file/k2n-assets/3d45a2b6bcf64347817f57d63a2fc644.mp3

I keep getting 301s:

Any ideas? Have I missed something?

[roba]

I’m getting the same error. If I try the link you posted, it appears you now have it working properly. What did you do to fix this?