I believe what you are describing is a granuloma? This will go away with time. Sometimes a laser treatment like Cutera Genesis can help resolve it a bit quicker, but mostly, they do just take time. I personally do not recommend Juvederm be used in the tear trough. Restylane is preferable here. And for some people, actually filling the central cheek area with Voluma resolves issues with the tear troughs.
"This answer has been solicited without seeing this patient and
cannot be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."
At 14 months most of the product should be dissolved. If you have remaining product it is possible to have this removed with hyaluraonidase injections.
Your other option is to give the area time to heal on its own. The product or bruising should resolve with time.
Best of Luck
I can't tell without seeing you, but I see people with persistent hyperpigmentation, discoloration, swelling and bumps/swelling under their eyes from filler done by other practitioners, and I have a lot of success reversing it using hyaulronidase injections which dissolved the hyaluronic acid filler. Filler under the eyes can last for years in some cases, so if you are unhappy you should find a great board certified experienced cosmetic doctor like a dermatologist or a plastic surgeon, that has experience using hyaluronidase and see if you are a candidate for it.