According to Draytek dot com , it's a "Multi-WAN" model, and explicitly states up to four concurrent WANs can be active at the same time.

According to Draytek dot co dot uk It's a "Dual-WAN" model and somewhere (I think it was the manual) it states the four configurable ports can have a maximum of two dedicated to WAN.

Then I saw in the firmware release notes for 4.4.3.1 (August 2024) a new feature "Support for 4 WANs".

So I think that as long as I upgrade to this firmware or beyond, I should be good to use three WANs, which is what I want?

I've not seen any evidence that (m)any Draytek employees frequent this forum and unless there's anyone out there with a 2962 and using 4 WANs, I'd have thought we'd have the same info available to as as you have. I'd be inclined to email info@'ll be straight from the horses mouth so to speak.

Turns out it does indeed support up to four WANs.

I have three WANs running concurrently on a 2962 at present! 

Yup in the end I took a chance and it worked out; with recent enough firmware all four ports can be either LAN or WAN, despite UK DrayTek site marketing it only as “Dual WAN”.