Can you answer these please
System details - help us to help you (click on link)
BTW port forwarding for a particular port ONLY works for the computer it was set from. So only one computer would be able to use that port forward setting. If you wanted to port forward for a 2nd computer, you'd need to do a separate port forward setting from that computer, & I also believe it'd need to be a different port if both could potentially be using at the same time.