Did you go for a look and a read on the router site I listed earlier? routers store history info in memory outside of their own O/S, as I can see you are no novice you'll know that memory fills up and as it gets near capacity it either slows down as it's overwriting or grinds to a halt causing a hang, regularly clearing this memory keeps the router working at it's optimum.
Cloud back ups are encrypted but as I said before it just adds another place that we personally have no control over and another attack vector, read what Michael & people like Brian Krebs say about clouds, router accounts that call home etc I feel you have too much faith in technology right now, re-evaluate your stance on how you see things in the tech world, for a long time ios was thought to be the safe as houses bet, it's currently like a veggie colander, truth is it always was but Microsoft was seen as a better and easier target, same thing with anything droid so in reality the only thing ios has going for it is at least Apple do bother to update it for a reasonable period and make a proper attempt to ring fence things as best they can safety wise but as Ubi found out all it takes is one bad apple.
The UDM appears a better choice anyway even being the older model, better quad cpu just lacking wifi6 iirc so I think we can chalk that one up as a win on your part.
Take all of this in good faith it's not a stick contest and as I said I'm always willing to learn more about things as some things seem to be the thing to choose but are the exact reverse like hiding an ssid.
Go for a read, RouterSecurity.org it'll open your eyes some I assure you, and thank you for your assistance over the last few days, it is appreciated.
Time to wait for Chris tomorrow now.
Onta.
