IP Address: 192.168.0.3 is your router address? Please check ftp access from another location (another IP address) not form your network.

If it's possible you can type IP address permanently in computer or server.

In internet I can see more openwrt solutions, but thanks for the next ;) My favorite openwrt is gargoyle I use this in WDR4300 and before in WR1043ND I'm very happy. In my MR3040 I have original...

I'm waiting for results your security configuration. Maybe for test switch off wireless security all. This is my proposition WDS configuration - My LINK

More information - you have to change IP address on second router.

Is it something wrong in configuration. In table "password" you have to write key from main router and you have make connect in survey page with main router also. After this configuration you have to...