Thank you so much that we are able to use port 1234 for the communication after enabled it.
However, we are still not able to activate the listening on the port 1235 even after enabled it.
Could you advise? Thank you.
Please verify following settings; check if the data sources using port number 1234 and 1235 are both enabled and check that you put the IP address of the sender PC in the “Allowed external IP4 addresses” list box.