App won’t let me save device names

We have had so many problems with this router, I am also seriously considering a brand switch. One other major concern of not being able to hold device edits/name changes, is the fact that the useless device names give you no insight if someone has connected to your router that shouldn't be. Apparently firewalls are no longer effective, we now need to purchase additional subscriptions to keep our data/network secure. Super ticked that consumers continue to allow these manufacturers to provide a mediocre product and as a result extended warranties, and subscription services to have efficient and easy parental protections along with data security are the norm. And we pay it - likely for no good cause as corporations are continuously open to data breach. These companies should be including these service in the sale of the product, not as an extra! Sorry for the rant... as you can tell, I too am fed up with these Netgear issues.