Coincidence or malicious business practices?

Good afternoon, everyone. To start,several days ago I got an email that my Netgear tech support expired and my payment info was outdated then just happened. I had an issue with my Nighthawk Netgear router last night and not sure if it was just bad timing or something more nefarious. At about 10pm last night, half of my devices connected to my home network disconnected and would no longer connect. It was completely random. 2 of my 3 ring cameras wouldn't connect, wifi thermostat disconnected but wifi fridge didn't, my computer stayed connected but my wife's wouldn't connect, tv would connect but Roku wouldn't load any apps.

After resetting the router with no luck, I finally called Netgear tech support. After they verified my information, they informed me my tech support was expired and I had two options, I could pay $99 for one year and if they can't fix the issue i wouldn't be charged, or they could email me, in one to two days, with instructions to fix the issue. Well due to my wife working from home, I couldn't wait and paid the $99.

They took control of my computer and opened my router, after doing some basic things like updating the firmware and checking hardware issues, they went into my devices and that's when I saw half my devices were blocked. He preceded to unblock those devices and after rebooting the router, everything started working again.

Now here's my question. Was this just a crazy coincidence or did Netgear block my devices on a router I bought because the service expired? I've never had this type of issue and now I'm moving away from netgear routers. I am also considering a class action lawsuit, but due to cost and uncertainty, I'm not sure.

Any info would be helpful. Also, I writing this on my phone from work so if I receive any replies, I'll try and respond but it might be a little slow.

Thank you