App Store Connect - unable to select build for preview

I am stuck as I cannot select the latest build of my app for preview. App Store Connect page shows build as 3 but I want it to state 6. The documentation I checked shows a + next to Build but my view on App Store Connect for my app does not show a +. Anyone help me with this?

please how did you solve it? I have the same problem today in October 2023, waiting for a response from Apple support for 4 days with no solution for how long..

App Store Connect - unable to select build for preview
 
 
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