A recent update to the Zoiper application has caused an error relating to the 'STUN Server'. This can be easily fixed by performing the following actions:
Settings (Cog / wheel icon in the top right) --> Accounts --> Click your account --> Advanced --> Scroll down to 'Use STUN' --> Change to 'Don't Use STUN' --> Press 'Register' and the issue should be fixed. Be sure to save the settings when you are asked to.
If your Zoiper is not registering, please try these steps first before contacting the Helpdesk as it will most likely fix the issue! If you are still having a problem after these steps, please contact us as normal.