The bulbs and switches are greyed out
For a week now, all my devices in the Kasa app are greyed out. They act like having no connection to the app, but some of them run on their schedules, others don´t. They are all upgraded to the latest firmware, so is the Kasa app. This has been a problem on and off for many months, and earlier it has been resolved by simply letting the app be running in the foreground on my Galaxy S8 and after 30 minutes, they are visible again. But this time it won´t resolve.
Does it have to be on the same Wifi-band? My phone normally connects to the 5Ghz band and the bulbs and plugs to the 2.4Ghz band in the same router. Google Assistant says "Can't connect to the TP-link Kasa app".
Are there any alternatives to the Kasa app to control my devices? Or is it necessary as a platform linking other apps such as Google assistant or ITTT?
Do I need to start all over, resetting all plugs and bulbs and reinstall the Kasa app? I have invested so much money in all these devices and it would hurt a lot to throw them away and buy another system...