Playing an Acol system, 4cM, 12-14 NT, 3 weak 2s. Sitting north on this hand, i bid 2♦ planning to show a delayed game raise. 2♠ on the left and partner to my surprise bid 3NT. How do we bid this now?
Bonus question: I listed 4H as one of the options, what would you take it as?

Help

1♥-(P)-2♦-(2♠)
3NT-(P)-???