I purchased a FIOS Quantum Gateway router on ebay, plugged it in and returned Verizon's router. When I got on online chat with VZ to confirm when the router rental fee would be removed from my account, the rep asked for the serial # of the owned router I am using. I told the rep I'd have to check the serial number and get back to them.
Do they need this serial #? The router is working fine.
Also, once their router is returned and delivered to their "dock", how long does it usually take for them to check and process the router?