The bug when Aura H2O Edition 2 Version 2 (some other models also affected) does not see OpenWRT WiFi access point is still here. It was already mentioned by others:
https://www.mobileread.com/forums/sh...0&postcount=28
https://www.mobileread.com/forums/sh...9&postcount=43
https://www.mobileread.com/forums/sh...d.php?t=319829
Everything works fine with factory FW 4.7.10733 or after tweaking router as per the last link.
Contacted support. Explained the issue. Was told that they escalated it.