Some others in the same boat can be found in this thread, I think:
As for ways to contact Purism, I think it is worth to send another email, and if no reply send a third email. Also might be worth sending from another email address, in case there is some issue with email delivery or getting sorted as spam or something. You can also try asking in Purism’s matrix chat rooms, see https://developer.puri.sm/Librem5/Contact/Community.html#matrix-chat-rooms