Able to pull an ipv6 from wan 1 but not from wan2?

[mrhomelabber]

So, I AT&T as my isp, same modems same settings on both
And yes they are ip passthrough,
So I figure out, I wanted ipv6 so I went through everyone thing, step by step each of the same settings pretty much wan2 is a duplicate of wan1 the same settings.
But I am trying figuring out why is wan1 only getting a ipv6 but not wan2 even though all the settings are the same.
Any help will be appreciated!