[Aireplay-ng deauth not working]

I am trying to find the name of a hidden SSID. I am on the same channel (Channel 6). However for the same <length: 0> network there are many constantly changing MAC addresses, and running deauth command does not reveal ESSID. How to fix this?

[THC Hydra: help on building the command]

I have a couple questions:

The form I am testing on has a drop-down menu instead of an input. 

orgIdSel=102172&accessCode=112234&add_access= 

is what I think should be relevant (the drop-down menu selects an organisation, to which an ID corresponds; the access code is the password). But add_access= cuts off after that. Should I just crop off "%add_access=" from the Hydra command?

Second, if someone could check my command:

hydra -vv -f -L accesscodes.file -P passwords.txt www.<url>.com http-post-form "/professional/addAccessCode?prgCode=APO&appId=113:accessCode=^USER^"

 

[THC Hydra: passwords with specific format]

Must I provide a document with all passwords or can you set THC hydra to follow a specific format of passwords?

for instance, a form has passwords which can be made up of 6 alphanumeric characters only (uppercase only).