Since September 2021, Loot has adopted Lychee as our go-to slicer program. Loot's 3D team uses Lychee to create all our support on the pre-supported files.
For this reason, we always recommend our subscribers use Lychee to achieve better printing results.
However, if you have another slicer of your preference, such as Chitubox, you can download the "Hollow", "Solid" and "Unsupported" STL files and print them using the program you choose.
Check out the differences between Lychee and Chitubox on this link.