AndroidRuntimeSettings is typically in DefaultEngine.ini. You can also change it in-editor via viewing Project Settings → Android
If you uploaded your apk and obb originally, and then uploaded a new apk, as I’m guessing you may have done due to the “updates added” comment above, you may not have uploaded a new obb with the updated apk.
You will always need to associate an obb with your new apk. This doesn’t appear to have anything to do with your SDKs or local settings. It is just a problem with your build on the store.