First of all, many thanks to the expo team for all your great work, you make my life much easier.
I have an app still running on sdk17, it’s a detached app, since it was put to the app store I did bunch of publishes through xde and all worked fine, last was on Feb. 16th.
Now I had to add new feature, which I did, but now after publishing, installed apps do not load new js, they still load old js bundle without my new feature.
The bundle loading policies for the server & client changed significantly over the past year. It’s difficult to say what the issue with SDK 17 is. The best advice I can provide is to update your app to work with SDK 25 and submit new versions to the App Store and Google Play, and regularly stay up to date.