Doorbell and chime keep disconnecting

Hi,It's been two months my company owns a Ring Doorbell 2 (with up-to-date firmware, battery powered, RSSI 48) and a Ring Chime (1.1.27 firmware, RSSI 27). From time to time - at least once per week - one of them two doesn't work fine. Usually for the Chime, the Ring logo blinks so the solution is simply to unplug and plug back the device… but already this is annoying. For the doorbell, it is more unpleasant situation. For example, I am not present at work today, I know from one of my colleagues the Ring doesn't work fine (it rings itself but the Chime doesn't). If I check on the smartphone app, both devices are shown "Online". On the Chime's device health, I can see the "Last Health Check" has been done "Today 14:35" (when I write these lines, it's 14:37). On the Doorbell's device health, the "Last Health Check" has been done "Yesterday 01:40"). If I try to see the "Live View", it loops on "Activating device" before showing "Failed to connect - We're having trouble connecting to your Doorbell 2".It is extremely disappointing as it seems the devices are not stable. How is it possible that the app shows that the Doorbell is "Online" ? Shouldn't there be some notifications from the app if a device is not available anymore ?It may be the case that my internet connection at work has some "microcuts" from time to time, but still it is strange the devices can't reconnect properly…Thanks for your help.