Hi Edward,
Sorry it took so long to get back to you. I sent a reply from my email a day after your message, but it came back as undeliverable. I guess it must have been too long so I'll condense it on the forum site. I was able to access and control the thermostats on both Nest and Home without any issues. I was also able to control them when linked to the Vivint account as well. The problem was the previous nest app worked fine with Vivint until the migration change came into play. The CS at google told me to look in the Vivint app for Works with Nest and then remove the thermostat. I explained that when the "Works With Nest" option was executed, it didn't show anything to remove. They had me go through the whole migration process again and I would still end up with 2 extra thermostats on my Vivint app and panel that were non-responsive and COULD NOT be removed no matter what was done. Neither of the Vivint or Google Nest CS rep's could remove them through any software app solution. Since these are not zwave devices they appear to be handled differently through the app and physical panel. There also doesn't appear to be any current backend solution to remove these non-zwave devices which are grayed out in the Vivint app and smart panel. I managed to finally get an onsite Vivint technician after hours of troubleshooting over the phone with no resolution. The technician was not able to remove the thermostats either. After several hours with his support staff and by demand on my part, a decision was finally made to replace the smart panel and re-register my entire account as well. I'm happy to report that this seems to have solved the problem. However, It doesn't explain exactly why or how it happened. Although I'm not a software developer, I do have an extensive background in hardware and software troubleshooting. I'm also not convinced a $400 panel replacement was necessary but kudos to Vivint for covering the expense of everything. Hopefully others will read this and be better informed. I hope that Vivint and Google Nest developers look into this situation and figure it out. At the vary least, Vivint has to be able to remove any and all devices on the back end that are attached to their hardware especially from any third party authorized access.
