RX_OFDM.grc not working on LimeSDR

Hi,
I have been trying to adapt the rx_ofdm.grc example for binary file transfer, although nothing appears on the RX side when I connect the LimeSDR sinks.

Has anyone been able to successfully implement this? If not any suggestion how should I proceed to accomplish a BPSK/QPSK file transfer using the LimeSDR and the GnuRadio?

Thanks in advance