Accidentally set CND password to null

I tried setting the CND password to my EM7511 to a blank string thinking it would then just default to protected commands being available all the time but now at!entercnd doesn’t seem to accept anything. Is there a way i can reset the CND password? I’ve seen here on the forums some using AT!OPENLOCK to reset it; could i get the correct response code if i gave the challenge string?

I suggest, you contact your established support channel for further support on this topic as it may require further looking into outside the context of this forum.