Why is my Rachio "off line"?

This is a problem. I recently had a 5 minute power outage. Not uncommon where I live. All IP stuff came back up nicely except Rachio. Lights said it was IP connected but app said offline. Tried power reset multiple times to no avail. Puzzling through I decided the most timely solution might be to reset the router. That worked. Now I have the conundrum of not being able to leave home during irrigation season due possible random power outages. I see that I can setup a CRON job to reset my router daily but not sure this would solve the problem. Would also require time consuming testing. Glad I kept my Rainbird controller…