Tuya Devices Unavailable (but aren't)

I have HA auto-detecting my Tuya devices and, for the most part, it is very accurate and working. I have a couple of devices that are now showing “Unavailable” but they are available in the Tuya app, are responding with it as well as IFTTT.

What could be wrong that HA is not seeing their status properly? Thanks for any insight!

Well, I deleted and re-added one of the devices and it reappeared in HA. How often does HA ask Tuya for updates or is it a push api on their part?