Problems setting up WIFI/LAN Repeater/extender


I wanted to create a WIFI Repeater/Extender I can connect to my main network via LAN or WIFI in this second Router.

I managed to do this just fine using the guide

Now, there is a problem when I try to create a AP connection, it does not assign/relay IP address (which does work if I connect via wired/LAN),

Also, If i try to attach this AP to lan or wwan, the WIFI client configuration stop to work and I have to delete and create it again.

Any ideas?

Router: TP-Link WDR4300 (v1.7), using latest OpenWRT snapshot.

Thanks in advance!