If brute forcing didn't work, try harder! ;-)
If you already tried harder, you might try other options:
a) Try KRACKATTACK:
https://media.ccc.de/v/34c3-9273-krackin...once_reuse
b) Brute forcing WPS with reaver seemed to be popular (i personally never liked it, though)
If you already tried harder, you might try other options:
a) Try KRACKATTACK:
https://media.ccc.de/v/34c3-9273-krackin...once_reuse
b) Brute forcing WPS with reaver seemed to be popular (i personally never liked it, though)