Thermostat always offline

Trying a few different Wyze rules with my thermostat and after one of them the thermostat says it is off line. On the app it shows the cloud with a line through it for being off line. Now the interesting part is the app looks like it is controlling the thermostat just fine. But it isn’t responding. Alexa says it is off line too. Did a factory reset and now it is running correctly again.
Update: 1/30/21 There appears to be multiple reasons why this can occur. One fix was to go to the router’s DHCP function and do a Release and Renew for all devices to clear the DHCP table. This has fixed several users who couldn’t get past the factory reset or initial connectivity but had good wifi connections. Thermostat not connecting to cloud, now won't setup after reset - #3 by vtester
Hope this helps some of you.

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