How do I get rid of white roll after filler injection? (Photo)

I (25 F) have had lip filler (restylane) for 3 years with no problems until 3 months ago. I went to a new injector, but on the left side of my bottom lip I now I have a white roll by the vermilion border that casts a shadow, making me look assymmetrical. The injector has tried to spot dissolve it 4 times but I don’t see a difference. I have never experienced it before. How do I get rid of it?