Hi, do you have ads in your app? If so, that was the problem for me.
I tried with AdMob extensions and with Google AdManager (from Kodular itself), but if one of them is used, I get the same error message as you in PlayStore - without ads it works…
About a month ago I was able to update the app normally in the PlayStore.
Ah, I just see on the screenshot that you apparently can’t use any ads in the app, because of the Free plan. Maybe the answer still helps (someone)…