I have now downloaded the new app, not really any UI enhancments
Canm you put on the wish list
The ability to delete/remove devices that no longer connect
The ability to restart an individual disc
Reason 15 for a deauth is an error in the 4-way handshake when a device authenticates with the network - can you check the device has the correct password?
May also be worth "forgetting" WHW network from that device and reconnecting. Also make sure that device has the latest software?