I have a smart plugs with power monitoring that randomly stops working

[olavgg]

I have 4x tuya smart plugs which runs v3.4 and 4x other smart plugs that runs v3.3. Those smart plugs that runs v3.4 will between a few minutes to a few hours stop responding and return:
status: {'Error': 'Check device key or version', 'Err': '914', 'Payload': None}

To get the device working again I need to remove it from Smart Life and re-add it with a new key.

Have anyone else had a similiar issue and know about a workaround?
The smart plugs running v3.3 works fine. No issues.

[vjbutt]

I also have the same issue with an energy monitoring device running v3.4. I can still access the device using the Smart Life app, but tinytuya gives the same error as yours.

Unfortunately the only solution that I have found so far is to power cycle.

[JAPISOFT]

The same problem!

[uzlonewolf]

To get the device working again I need to remove it from Smart Life and re-add it with a new key.

I can't say I've run across any devices that require this, but most of my v3.4 devices do need to be power cycled every now and then. I don't know for sure but I suspect memory corruption is causing it to temporarily "forget" what the local key is supposed to be.