How do I open port 5353 for Bonjour?

I am trying to use a program to transfer files from my tablet to my laptop and vice versa. It is called File Transfer by Delite Studio It transfers files using Bonjour. I need to open port 5353 UDP so it can use Bonjour. I have tried several things but nothing I have tried is allowing Bonjour to connect to my computer. Any help would be appreciated. Thanks.