Hey, TollGate dev here.

It's a system to load files onto the router for flashing, i haven't used it personally, maybe you don't need it.

If you just want to copy an OpenWRT image file to a router that has no ftp server installed, Here's a snippet of what i do in the TollGate installer:

The -O option uses the old SCP protocol which doesn't require sftp-server

scp -O -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=error "${localPath}" "${username}@${ip}:${remotePath}"

i've used this for the MT-3000, MT-6000 and GL-AR300M.

Questionable. I see it has 8mb flash, which is low source. We try to target the gl-ar300m which is already a squeeze with 16mb flash.

We do hope to support very low-power hardware further down the line to make TollGate more accessible for low-income areas, but we're not there yet.

There are packages for openwrt to route traffic through a VPN. You might wanna look into the OpenVPN package. Mullvad could be a good option instead of NordVPN.

hope this helps a bit!