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.. :baa. kaa. ::. .:maa

Check the beacons interval (normally about 100ms)
If it's too high or too low maybe it will be hard for you client to maintain a connection.

(if you have airbase cmd in mana)
airbase-ng -i...

Did you launch by the GUI (Kali Android menu) ?

Try directly with command line.

cd /usr/share/mana-toolkit/run-mana/
then launch a script

ex:
./start-nat-simple.sh

@tipoe

with root privilege type : airmon-ng start wlan1
then do a ifconfig & check if you have mon0

Hey

try : iw dev mon0 interface del