please allow me to type in my own gateway and subnet, such as 166.xxx.yyy.1 and 255.255.255.0

In the WAN Connection Settings menu (Peplink MAX Transit), please provide as soon as possible the Subnet Selection capability to allow me to type in my own gateway and subnet, such as 166.xxx.yyy.1 and 255.255.255.0. Pepwave’s WAN Connection Settings menu currently provides no option and chooses the gateway and subnet for me. Other vendors have three option choices under their Subnet Selection Mode (Force 24 Subnet, Force 31 Subnet, and Custom Subnet). The previous firmware 6.3 was designed to try to solve this (see below screenshot) issue, but apparently the it still picks the subnet, and it is not available antmore.