Power connector on Router very loose & disconnects internet frequently

I have a Nighthawk BE18000 WiFi 7 Tri-Band Router (RS600) - I bought it used on Amazon on July 23, 2025. This router was previous registered by a different owner. Looks like this router was released for sale in Sept 2024. The previous owner who returned it to Amazon registered (forgot to deregister)  this in Oct 2024. So by the time I bought it in July 2025 - apparently the support had expired (no idea how the math works). When setting this up after i purchased this in July 2025, NETGEAR offered me complimentary support as I had issues setting this router up. Apparently that's expired too. Amazon was gracious enough to send me a new replacement router which I received today. Also on the my Netgear page it says the support expired on 

Your complimentary technical support expired on 2024-10-29.

Your product hardware warranty expired on 2024-10-29

Registered on: 2025-07-24 (new owner -me)

Purchased: 2024-10-29 (former owner)

Here's what I am looking for -

1. I need to deregister my existing product off Netgear ownership to me.
2. Currently I have a Netgear Armor subscription I need to move to my new router which I am setting up now.
3. If the router was released for sale in Sept 2024 how come the Complimentary Tech Support and Hardware warranty expire in a month???? Is this an error - if so is there a number I can call to get someone to answer the above and help move this forward.

I love Netgear products but its getting increasingly difficult to get to understand hardware warranty and tech support expiry math.

Thanks - Thomas