You misunderstand.
I have BlueIris installed on my PC (192.168.0.244), and I can watch my various web cameras by pointing my browser to my own PC (192.168.0.244) and it brings up the local BlueIris web page that the app is hosting on my PC (192.168.0.244). Prior to the install of Avast I could do that locally, plus from other PCs in my home, and (after opening a port) access the same web page from outside the house.
So it is not the BlueIris company web page, but a local to my PC web page the BlueIris app runs so I can watch and review recordings from my web cameras.
What changes do I have to make in Avast on my PC to be able to view the web page?
Thank you,
Tim