RTAC-68U Vlan and Load Balance questions

[wsarahan]

Hi guys how are you?

I have a doubt here

Just installed a new ISP internet connection here, to not use the Router that they send i created a Vlan at my 68U and used just the ONT that the service provided, It`s a Fiber service

But now i have a question, take a look here at the 68U config page

As you can see it asks for the Vlan number for Wan and we have the LAN3 and LAN4 that i just need to leave empty, i,m not using TV or something like that, just the Internet

But making this way i`m loosing the Port3 and Port 4 to make the LoadBalance, when i try to select this ports to make the Load it says that it`s already in use in the section from the image

Now i have the questions:

1 - Is there any way to "free" this ports to use at LoadBalabce?

2 - Can i still use this ports, in the case 3 and 4 to connect another wired product as an example an Apple TV and not have a problem with the Vlan or something else?

3 - The special applications (The part that has the Microsoft name at DHCP....) should i let default as it now or should i change something?

4 - The LAN3 and LAN4 fields should i leave blank? the router does not let me put me 0


Thanks guys