Issue not login and with not change web port

[YoshiKill]

Hello, i (try to) use latest version of qbitt-nox with OpenWrt 21.02-SNAPSHOT aarch64
But i have some not understanding to me problem.
First is that qbittorrnet is start at 8080 port and i cant change it. It's a problem because it conflict with my luci web interface, but this problem i skip changing port for luci. For qbitt i cant change port because its don't create config file.
And main problem is that i cant log in!!
I run qbittorrent bin as usual:

root@GL-MT6000:~# "/overlay/upper/usr/bin/qbittorrent" start
WebUI will be started shortly after internal preparations. Please wait...

******** Information ********
To control qBittorrent, access the WebUI at: http://localhost:8080
The WebUI administrator username is: admin
The WebUI administrator password was not set. A temporary password is provided for this session: ahT8WrYJS
You should set your own password in program preferences.

but when i enter Login: admin Pasw: ahT8WrYJS (or any other from restart qbitt)
its says: Invalid Username or Password.

i try different restart with different pasword, try other browsers firefox, chrome but it's dont log in
and there is no any config file in /.config/qBittorrent/
for change password in it or web port.
So please help me with this problem.

[userdocs]

this is not a build script issue. moving to discussions.