Anydesk anynet_19 error

Hi,

I am using the UTM 9 firewall on my AWS workspaces set up for a year now. one of the applications I use is Anydesk.

as of today, all users receive a message in their Anydesk saying "can't connect to the Anydesk network (anynet_19 error).

I went through all the threads regarding Anydesk in the Sophos community, but I can't find any explanation as to what might have happened.

I should mention, that up until today everything was working fine and upon the setup of the firewall, Anydesk was configured as an exception (although I don't really know where in the settings because I am not knowledgable enough).

I have two questions:

1. can someone point me to the part of the settings where an exception will be configured for software (applications)?
2. maybe you can explain what anynet_19 error means? there is not much info about it out there...

thank you