Hi, everybody!

i hope you can help me, please!
I have a point-multipoint network, and i have 18 clients connected to my wireless network. The client's CCQ is Ok, but i can´t
connect another one because the antena (a DiscLite5 https://mikrotik.com/product/rbdisc_5nd ) lose the signal frecuently. It´s weird because i don't have Tx signal
(only Rx) in my CCQ and the other clients are ok.
I'm sure about this:

The bandwith isn´t the problem
Some obstacles aren´t the problems like buildings, trees, etc
Wireless protocol either (i probe both protocols nv2 and 802.11 and the problem is the same)

I would like see your opinions. Thank you.