xM1 static vs dynamic nonce?

Howdy all, i popped my replacement xm1 in yesterday and after some looking at it with my pm3 easy it seems it doesn’t have the “static nonce” my old xm1 has… could this static nonce be the reason my last xm1 was failing to comply? If so, how do I go about making said nonce dynamic?

here’s a pic of the readout from my pm3

rather odd…
any help would be great ty :}