Tried opening a sell trade on the AudNzd pair but it won't open why. is that

I tried opening a sell trade here but it won’t open now the trade is winning

Look at your journal,
Must be a explanation in there,
If not ask ur CS broker

And i notice u put SL and TP 10 pip from entry when spread is 9.4 pip
Maybe that is the problem

You should call your broker and ask them about that.