After a power outgage, and network outage, HA restarted properly and I was able to access it. However, some of the cloud based integrations were not running properly (such as Alexa media player, Ecobee, Radio Browser).
Those were all complaing about retries exceeded. They had tried to connect to the network x number of times while the network was down. Then, multiple days later, they never did retry again. I had to restart HA and then they all came back.
Is this an issue that HA can fix in an update? Or would the maintainer of each integration need to fix this? There should be some method to make an integration reconnect after a network outage during a power outage (and probably would still happen with an extended network outage even without a power outage).