Sorry, I don’t know how to tell which scanned; i just press the Scan button.
Since it is N-AC, I hoped it would find my N router also.
It has options for Legacy, N, AC, when I press the Add button and set Client mode, and I tried all that.

If i just set it to connect as Client, it doesn’t even try, probably because it can’t see the router.

It was image built supposedly for e750, which is listed on this page:
https://downloads.openwrt.org/releases/21.02.1/targets/ath79/nand/