Can one armor account subscription use for two router?

I have two networks at home.

one is fibre optic broadband, another one is 4G LTE broadband (standalone router modem with 4 LAN ports).

If I have two Netgear R7000P, one for the fibre broadand and another one for the 4G LTE broadband,

and I subscribe to one armor account only, will I be able use this one activation code to activate armor on both R7000P?

Or do I need to subscribe two armor account?