Hi, I got message “Some Certificates are expiring or have expired:
Certificate named “default” is going to expire in less than a month. Please
update this certificate in Certificate Manager”.
In System Overview is red message “Certificate named “default” is going to expire in less than a month. Please update this certificate in Certificate Manager”.
In Certificate manager I can see my Default Self-Signed certificate. I tried click to Update certificate but date has no changed. 
OK, I tried create a new Default Self-Signed certificate and marked it default but now i got a new red message “Please change permissions on /etc/wanpipe/global.conf or disable Sangoma DIGIUM mode”.
What should I do, please? I’m a newbie in Linux. I thank you for your time and sorry for my english.