Difference in closing price between NYSE & T212

Maybe Iโ€™m missing something but the closing price (21st May 2020) for ACB (Aurora Cannabis -NYSE) shows as 17.40$ on all external/independent charts but on the T212 Invest platform (apparently displaying NYSE data), it shows 17.17$ (sell 17.16$/buy 17.17$)
Can anyone please explain this?

17.40 was reached on after hours trading and we donโ€™t have those displayed anywhere else than cfd account same for now ACB price is 16.15 but it is extended hours trading so it is not displayed as well