Dent and dark shadow. Could this be from the lip flip? (Photo)

It is known problem, unfortunately, that fillers may leave results like yours, due to migration of the gel material and scarring, in particular around the mouth and lower eyelids. Some of these effects may be long lasting and need to be treated with other modalities. This can be decided only on the basis of in person consultation with an experienced, board certified plastic surgeon. Good luck.

I would suggest dissolving the lip filler, becuase most of the product migrated to the top and try it again with a different technique

For unique cases where a variety of modalities could be used to treat the condition, I would suggest an in-person or virtual consultation to develop a custom and effective treatment plan. It is difficult to precisely define the best option without collecting the same information. I suggest reaching out to an expert for a consultation with surgical and non-surgical methods to get a comprehensive option. Best, Dr. Emer.