MyChevrolet App broken after dealer service

Hi

I brought my 2024 Chevy Trailblazer LT  to a dealer for service On Dec. 2nd 2024 for service and to fix a few minor problems.

Sadly not only did the dealer not fix anything, they also broke the MyChevrolet App. I bought car on May 3rd 2024 and had a few minor problems since I received the car and none have been fixed.

My cellphone is a Samsung Galaxy S23 Ultra. After I took possession of the car, I installed both the OnStar and My Chevrolet Apps. Both worked well since then. Since the dealer returned the car, the OnStar app seems to work as before and as expected.

Now we come to the MyChevrolet App the dealer broke it. I repeat: Before dealer service: worked fine, after service: Will not update. I've tried everything possible. I uninstalled and reinstalled the app. I've power cycled the phone a few times as well as recycling the phone. Of course, after a few days, the car has been started several times and had a few days to do any updates.

The data displayed is the old data that was there before the dealer provided what, in this case is euphemistically, called "service".

I'm going to provide a few possible reasons why the app "broke". I spent most of my adult life ( about 45 years) doing design, development, troubleshooting of both hardware and firmware for embedded systems.

So here goes:

1 - My account at GM that provides the MyChevrolet service was deactivated.

2 - My account was deleted.

3 - There are bugs in servers and/or the software on the servers

4 - There are connection timeouts when accessing the server databases. Since GM operates worldwide, it is not inconceivable that variable delays exist. This may be difficult to find since communications paths and delays are random when using internet protocols.

5 - The MyChevrolet app times out when trying access or update the server database. Verify that there are a reasonable number of retries in the event of timeouts.

6- Since the car can still be started and stopped using the app, a connection is established to a server. However, the systems at GM are likely distributed (more than 1 computer) there may be internal communication problems between the servers.

7 - I have seen numerous posts about the app and they all seem to report the same problems and all receive the same suggestions that do not appear to resolve anything, My suggestion is simply start by looking internally at GM computers the problems are likely there and not on the customer's equipment.

8 - Also confirm the there are no problems in the vehicles. I don't know if you still have the Romulus Engineering Center near Detroit but that would be the people who have the necessary equipment to debug these problems.