I've got the A7, which I believe is the same thing except it has some sort of ability to enable Alexa control for something or other.
Mine has worked great. The only issues I've seen are (1) the traffic stats don't count IPv6 traffic, and (2) there is something odd that sometimes goes on when a connection ends that can result in packets from the LAN side showing up on the WAN side without the LAN-side IP address being replaced with the WAN-side IP address.
The first is a bit of annoyance, and the second as far as I saw didn't actually cause any problems.
Can attest. I finally ditched mine, got tired of it falling over multiple times each week.