Problem Connecting EssentialPIM

Hello Andrew, 

We will check and help you to resolve it. 
Could you please confirm whether you are using AVG Business product or AVG Ultimate package?
We need to check whether firewall or any other AVG component blocking your email client. 
Please follow the steps in this article (https://support.avg.com/SupportArticleView?urlname=Disable-AVG-Antivirus) to identify the AVG component that is causing the issue & let us know.

Thanks Sreenu - I will proceed via the link you kindly supplied.

I am trying and failiing to attach an EssentialPIM email client to a Winows server and although both ends work in standalone mode, connecting to the server fails. I'm sure this is a firewall configuration issue but I'm out of my depth about how to configure  AVG to allow the connection to succeed.
I'm okay with the basics of IP addresses and ports - but figuring out how to configure the firewall on both client and server leads to confusion.
Connection Instructions
Any help about how and what to configure would be gratefully received.
Thanks!

Followng up on this…
I raised a  support  incident on the AVG  business website two days ago, which hasn't been responded to. As  part of that process the web siite advised that I would receive a follow up email advising the number of the support incident -  which never arrived.
I'm really not ecstatic about AVG support. Their system knows all about me and the  server as I regularly receive support emails about the  server - sometimes advising that the server needs rebooting following an update.No complaints there - though raising a support incident leaves much to be desired.
My AVG support is up for renewal in a  couple of months -and it looks like I'll be  looking for an alternative.

Thanks Sreenu - I will proceed via the link you kindly supplied.

Hello Andrew, 

We will check and help you to resolve it. 
Could you please confirm whether you are using AVG Business product or AVG Ultimate package?
We need to check whether firewall or any other AVG component blocking your email client. 
Please follow the steps in this article (https://support.avg.com/SupportArticleView?urlname=Disable-AVG-Antivirus) to identify the AVG component that is causing the issue & let us know.

Hello Andrew, 

We are sorry for the delay in response. We can really understand your frustation. We have made your request with highest priority. Our Business support team will get back to you as soon as possible. Thank you.

Hi Veeramani,
I am using  AVG Business on the server, and Internet Security on the client.
I disabled AVG on  the client  – no change.
Are there  log files which report firewall actiivity? At the momentI don't know where the failure to connect is blocked.
Regards,
Andrew

You are welcome, Andrew.

Trying to use the liink, but web server says busy and try again later.