You must lock in your mutant before you can mint it. Choose the cats you want to mutate select your traits and click "Lock Mutation" wait for the success or error message then they will appear on the mint page when you connect.
Please note that what you see on the preview is what your mutant will look like (minus the watermarks). If you see something that looks off about it please open a ticket and we may be able to make adjustments to it. However, once you lock in your choices- that is it. If our team notices an error or something out of the ordinary with your mutant we may put a temporary placeholder on the image and make updates to it.