Hi Anthony, thanks for reaching out. The Q410 is not a Wi-Fi AP, it is LTE, and requires a core network to operate. It has the identical casing as an R510, which is the product that I think was installed in the Lennar homes. I think you can do a hard reset of the Q410 and then download a userguide to see how to set passwords and all that, but you would need to pay for subscriptions to cloud mgmt, spectrum access system, and a cloud EPC.
More likely, I suspect you probably have an R510 and may need to repost on that forum to get help, although if you don't know the password and have never used the system, the hard reset may be the way to go.