Hello
Can someone help me with the problem?
Some time ago I had to restore the router to factory settings - unfortunately the wifi did not work and I manually installed the drivers - unfortunately incorrect (“wireless”). Currently I know what the error was and I installed the correct ones, unfortunately after restoring the settings I have a problem with the network - if I add a network according to the shfdgadfgasdv tutorial, the 2.4G network immediately enters “slave” mode with the 5G network, there is no such problem 
from the terminal it does not display this problem in the GUI, so CAP - it is disabled. does anyone have any idea what to do about it? Yes, I know, resetting the settings is always a universal method
Regards
Post config export.
According to your screenshot, wifi1 is a slave interface.And so is wifi2.
So the issue lies with wifi2
EDIT: to create a simple config just create a “configuration” entry with SSID, Password and apply it to each interface (the MASTER interface)
It sounds like that’s all you want.
Thanks for the answer 
Yes, wifi1 is immediately created as a slave - but I don’t know why 
even when I cleared all the configuration and did it from scratch.
In this tutorial also the network shoes are marked as “SLAVE” → “S”
https://youtu.be/LSYb2kETljA?si=kvzvjpPzW5IWCW_V
Both are slaves and thats correct.
Clear your config and try something like this:
/interface/wifi/configuration
add name="main" ssid="main" security.passphrase=asdf1234
add name="guest" ssid="guest" datapath.client-isolation=yes
/interface/wifi
set [find default-name "wifi1"] configuration=main
set [find default-name "wifi2"] configuration=main
add master-interface=(find default-name "wifi1") configuration=guest
add master-interface=(find default-name "wifi2") configuration=guest
This should give you 4 working interfaces.
Keep in mind any setting you set outside of a configuration counts as an overwrite so its best to start with empty interfaces (no ssid, no passphrase, no anything)
EDIT:
I just tried that config on a cap ac and i get both masters as “slave” and “master”. Seems like a bug
Could that be due to the fact that you didn’t set a name? I didn’t check the statements…
@Qbaakr, if you want to have a clean starting point, just reset both wireless interfaces (and make sure there are no slave interfaces):
/interface/wifi reset wifi1
/interface/wifi reset wifi2
Thanks a lot for your help…
First I deleted everything, then I reset the interface settings according to @erlindena then everything in order according to @itimo01’s description
It works, the most important thing 
Thanks again
Best regards