MyGMC app not updating vehicle status since OnStar had to refresh my wifi signal a week ago.

I have the same problem and it started when I tried to update my OnStar subscription on June 24, 2025, for 2015 Chevy Tahoe, not only did it take more than 3 weeks just to get my account updated so that I could purchase the subscription. Once the subscription was updated the My Chevy App fail to update. I have gone through troubleshooting  with On Star technical support twice, after the first session the milage did update however the fuel/milage fail to update. They have checked my system twice with no errors. Today I went through that process again still no fuel/milage update. They requested that I drive the vehicle and if it doesn't update call back again and they will escalate my case to a higher level. I believe something happened during the software migration process from Chevy to OnStar and they don't know how to fix it yet. This is very disappointing I've a loyal paying customer since 2016 now I'm frustrated