HELP ME I'VE BEEN STRUGGLING😭

I want to test airfoils in ANSYS fluent and I usually do to airfoil tools in the web and download the coordinates of the shape and import to ANSYS. However, I have trouble making modifications to the shape of the airfoil. I want to add a tail but somehow ANSYS won't recognize it as a full shape. Does anybody have some suggestions how to fix this? 🥲