SNZB-03 and SNZB-01 randomly appear offline on Zigbee U but scenarios still work

Welcome to the Zigbee Bridge Ultra category!

I have an issue with the Zigbee U connected with 9 devices. From time to time, some of them appear offline, but the scenarios are still active.
Then, the next day, they appear online again without doing anything.
This only happens with these two devices: the SNZB-03 (old model) SKU SON_SNZB-03 EAN13 6920075776119 and the switch SNZB-01 SKU SON_SNZB-01 EAN13 6920075776096.
There are no problems with the other devices.
Do you have any idea?
Thks You.

Additional information: triggering the devices (motion detection or pressing the switch) makes them appear online again. It looks like they go into some kind of sleep or standby state when they are not used.
I should also mention that I monitor the devices using the eWeLink Android app.

Hello,
We sincerely apologize for the inconvenience caused. Regarding the issue you reported, our team has already implemented optimizations.
We recommend upgrading your ZBBridge-U to the latest version, 1.19.0, to see if this resolves the problem for you.
If you encounter any further issues or have additional questions, please feel free to reach out to us at any time.
Thank you for your continued support!


Thank you very much for your responsiveness. !

I will check very soon