Ptp c5 losing signal

We got a new ptp c5c installed with antennas altelix ad5g30m2.
When we boot the radios the signal received is of -55.9 dBm.

But after some minutes the signal drops to -70 dBm.

The country is colombia licensed.
firmware is 2.5.2.1

We got the design in the cloud and the signal is supposed to be -48 dBm.

Any Ideas?