Port forwarding service conflict with an existing port forwarding rule offering Any service

I am trying to add a port forwarding rule to my router that will allow a webcam and a 3d print server to run so that I can have remote administration. I am getting the following error

service conflict with an existing port forwarding rule offering Any service.

Here's a screenshot of what's going on.

I have tried to mess with the ports. I made it so that 3344 goes to 3344 and it still gave me the error. I changed any goes to 3344 and it still gives me the error. I see that one of my other computers has a working rule

"TCP Any -> 0-4566"

This new rule doesn't seem much different from that one, but it doesn't work and that one does. I would love to know why this is happening. I am unable to delete the first rule for

"localhost 127.0.0.1 Verizon FiOS Service Tcp Any -> 4567"

That must be a verizon one. I fear that it may be interfering though. Thanks ahead of time for any help!