Can someone help with VPN configuration

hi all!i'm totally newbie and unfortunately disabled and i want someone to help me/guide me(teamviewer) setting up my new router in order to have vpn in all me connected devices.i bought this "TP-Link Archer C7 AC1750 Dual Band Gigabit Wireless Cable Router, Wi-Fi Speed Up to 1300 Mbps/5 GHz + 450 Mbps/2.4 GHz, 4 Gigabit LAN Ports, 1 USB Port, Supports Parental Control, Guest Wi-Fi, VPN" from amazon.

First, if you can return it, I would do so in a heartbeat.

If you have to keep it, install instructions are on

unfortunately i cant..i flashed openwrt but i cant follow nordvpn install guide..

how to go back to the original tplink firmware easy and safe

1)Obtain a stock firmware or a 'factory' OpenWrt image. Store the firmware on the TFTP server as ArcherC7v2_tp_recovery.bin Replace the 2 with your version number if you don't have a v2.

2)To activate TFTP Recovery press and hold WPS/Reset Button during powering on until WPS LED turns on. For v4, use the reset button (near the power switch), not the WPS button.

for the 1st just download v5?
for the 2nd reset button or wps/reset?