Q.Black Bat Plant
My black bat plant has a brown tinge going through the middle of the green leaves and one green leaves is small but has become crinkle I have repotted it some months back with orchid mix purling sand blood and one and normal potting mix it is in a big pot just worried about the leaves no pest on leaves can you give me some advice please .Thankyou Michelle Robinson

Certified GKH Gardening Expert
Unfortunately, your photos did not come through. I am unable to see the situation to assess what is going on.
In the meantime, this collection of articles will help you to know what care these plants need in order to thrive:
https://www.gardeningknowhow.com/ornamental/flowers/bat-flower