Your setup is Routed Client, if BSSID is correct and the other Router is acting emitting just one SSID with BSSID 00:15:3C:15:CB:66, with dhcp enabled it should work (if you have two SSID with same BSSID then could be conflict when chosing to which one to connect). Check if other Router have channel 36 fixed, since you set as fixed too, if not, set it to 'auto' on both, but you will have some disconnections. You could try to use another channel too, above 100.
I have a sample configuration file here, but yours seems to be fine... https://gist.github.com/braian87b/2333a32577a221c8d62b5ce8b54a4d95