Why are my EAS Updates not working??

I seem to have huge challenges in using EAS Updates and I no longer understand why.

My SDK version is 47, EAS CLI is 3.4.0. This is managed workflow.
I have setup production branch that alos listens to channel production. We have a custom runtimeVersion set, currently to “48-4.1”.
My latest base app from stores is versioned 4.2.1 and listens to branch production, with runtimeVersion “48-4.1” (image attached). Now this happened:

  1. I made a EAS update, with command eas update --branch production --channel production
  2. Update goes through, my app prompts for update, everything works. (Version codes where updated in the release, runtimeVersion untouched)
  3. I make another release, nothing happens anymore
  4. I uninstall and redownload 4.2.1 from app store.
  5. Even the update that was prompted for installation once, is no longer appearing.
    What is going on??

Iamge about 4.2.1, confirming that runtimeVersion is right.