Maybe it will be open after pvp event. Crap, i wasted a lot of resources.

I used 21 peronamin and failed twice to get ex card (2/3 before daily reset).

I would have just been trying to get it from N gacha pulls instead of explorations.

The 30 day SR girl Count as getting a SR-Girl as do event rewards. So select an get a SR girl quest before claiming rewards.
Reweal + SR-Gacha also is also good to keep in reserve it you are unlucky and need a last SR-girl to get Ex-Wild.
When going for Ex-Wild make cetain you got more than enogth to get all the SR-girls it is not fun ending with 2 out of 3 SR girls.