I have a number of TP-link switches and outlets on my home Wi-Fi network which I control from my KASA app when I am not at home. I am not at home and one by one the devices are losing connectivity to the cloud after running well for 3 months.

I have checked the network the devices are on and they are showing their ports are active on the LAN when probed with nmap. They are also following their preset programs. But one by one they appear to be losing connectivity with the cloud that KASA uses to make the app work.

How can I restore connectivity remotely when I don't have physical access to the devices (isn't that why we have the app?) and only have LAN access to the devices. Is there a way to ssh into them and reset or restore them?