These for a beginner seem reasonably straightforward, just need some clarification on....
"Connect your device to the LAN port, then press the WPS and Reset button {singular} and power it up."
This reads as if the WPS and Reset Button are one and the same (some devices have just one button, such as the TP-Link WR841N ) The WA801ND V5 has the usual pin hole "reset" AND a projecting button for WPS.
It may not matter but do BOTH have to be pressed on the WA801ND V5 ?
To press both and power up is just a bit fiddly with the danger of releasing one or both when trying to hit the power button too.