Excessive port scanning issues on my network

> Model: R7000|AC1900 Smart WIFI Router

   Firmware version?  Connected to what?

> My ISP has told me that there is excessive port scanning coming from
> my network... [...]

   Could you get a less vague description of the offensive activity from
them?  Target(s)?  Time dependence?  Any actual information at all?

> [...] Can the new Netgear Armor help identify and resolve this issue?
> [...]

   I know nothing about Netgear Armor, but I doubt it.

> [...] I have cameras, lights, thermostats, alexa, and other devices
> that may be the culprit.

   How about a Windows system infected with malware?

   With no real information on which to base anything, I'd suggest
disabling/disconnecting various sets of devices, to see if the source
can be determined.  Pure guesswork: I'd worry least about an R7000 with
current firmware, not much about Internet-of-Junk gizmos, and most about
any Windows system without good malware protection.  But what do I know?