Hello Mark ,
You are already registered Axcrypt user. Axcrypt does not send the verification emails. please sign in your Axcrypt app with your account credentials.
If you are registering new emails you will receive the verification code emails.Based on email filter settings, sometimes it will be there in the user’s spam/junk folder. So please check once again your mailbox folders and firewall settings.
Still facing any issue, please feel free to contact AxCrypt support via email@example.com