RB951Ui WiFi stations sending station leaving

Hi friends. I have a problem with RB951Ui. the wifi stations after some minutes disconnected from the router and connection lost: sending station leaving (3). the router os and firmware is latest 6.43.8 any way to fix this problem ?
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???

Nobody can help? :neutral_face:

Sent from my C6833 using Tapatalk

If this is a mobile device on your hotspot then this is rather normal, isn’t it? Just a battery savings and therefore wifi switch off temporary on the mobile device.
Why do you think this is a problem?