Hey Vlad,
This forum is meant for high-level discussion of the platform and services, and a technical issue report like this should go in the Public Issue Tracker. When you post your issue report there, we'll quickly acknowledge it and begin work, as we monitor this form, various Public Issue Trackers, and Stack Overflow. Several teams and products also monitor their respective github issue pages. Some information you should include in your report:
* The app ID in question
* The name of the service you deleted
* Any errors you see in the console when deploying
* A verbose curl output of any request URLs which return errors
* Any information you can find in the Logs viewer for the affected service
Cheers,
Nick
Cloud Platform Community Support