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Failure to receive the correct Preamble

I have this question because I have to work on a receiver that is going to receive packets from the ADF7023 and the product I have to receive from is already finished and based on this chip.after analyzing the spectra, we noticed an unusual thing is happening. According to the ADF7023 PACKET MODE , the received signal does not match the transceiver .there is no preamble being received.
What is certain is that the Received pattern (assuming a low frequency for zero) is as follows:
start: 0110011010011010011001100110100110100110011001101 ...
Which certainly doesn't match the preamble pattern, which is a necessary part of the waveform.

Can anyone help me?