AVG Mac Antivirus realtime protection crashes after macOS Sierra install

Exactly as stated, AVG Antivirus Mac realtime protection crashes after macOS Sierra install

It says 'Realtime Protection has crashed, Unknown error has occurred'.   I have uninstalled using AVG uninstall, then downloaded fresh copy from online (I've got a 3yr paid Ultimate AVG premium account), reinstalled and exactly the same error.    And it refuses to login Zen or AVG Antivirus from the application too.

Surely AVG have had PLENTY of time to get this right in the beta program, this is really unacceptable not to have working and stable AntiVirus post public launch of a top two major desktop OS worldwide.  

Can I please have an urgent explanation of I will be asking for a refund and moving our company to another provider.!

Hello David,

We are sorry for the inconvenience caused.
This is was reported recently by many of our customers.
Our developers started working hard on this and the fix will be updated as soon as possible.
Your patience is much appreciated.

Hello David,

We are sorry for the inconvenience caused.
This is was reported recently by many of our customers.
Our developers started working hard on this and the fix will be updated as soon as possible.
Your patience is much appreciated.