FIXED IT!!! Couldn’t connect to Asus 2.4Ghz, only 5Ghz, said stupid “incorrect password”. Issue with 5Ghz is that the range is limited and i have a wall made of block. Also knew issue was somehow related only to apple, because I own wifi camera, sonos speaker and google home and they had no issue connecting to 2.4ghz.
Researching issue, read that this error could be fixed if u go to ur router admin page (ie 192.168.x.x). There, go to Wireless > advance settings and somewhere in the options change bandwidth from 40 mhz to 20 mhz.
Mine said 40/20mhz.. so i changed it to 20 mhz and now “incorrect password” error is no more. Hope this helps others