simple WLAN client not getting IP

RouterOS Beginner Basics
1

I have a RB433AH routerboard with routeros 4.11.
I try to connect to a wireless AP. (After I have this running I want to share it through NAT).

For the wlan1 interface I have set mode to station and the band to 2.4Ghz-B/G.
After a scan I connect to the desired network.
In the ‘registration’ tab it shows that the link is up. (and in the interface is says ‘connected to ess’ in the bottom).

I’ve made a DHCP client for wlan1. It cannot get a lease.

What bothers me is that I cannot see which security settings are needed for this AP. There is no question / notice or result.

I tried to make security profile:
After connecting with a windows PC, it says

security type: no authentication (open)
encryption type: WEP
key index: 1

Mode: “static keys required”
For static keys I filled key 0 and 1. Transmit key = key 0.
Did not work (no lease)
Tried a St. Private key (40bit wep). Also did not work.

I’ve even made an item in the connect list, which had no effect.

Anybody any idea?

2

If the link shows it is up, then there is no problem with security connection and if you set the dhcp client on the Wlan and does not get a ip, then the problem is probably on the AP point side.