Hi, thanks for the advice. I will proceed to do so. However, I do have a side question I need to ask. I feel that it's better I ask in this thread since it's the same model. In Ansys Meshing program, my mesh orthogonal quality has the following statistics:
As you can see the minimum is above 0.01. But when I check mesh in Ansys Fluent, it gives me the below message. Now which program is lying? :)

Thank you for your advice in advance!