I’m struggling to win the buy box

This is my own product and I am brand registered. I am the only seller on the listing but not winning the buy box. I noticed on the inventory page I have a green check mark next to lowest price, but not competitive price. How can I get the green check mark next to competitive price? Will this help me get the buy box?

For context I have sold on amazon before with this account and never had any health issues. I took a break for around 2 years so I ended up having to reactivate the account. Not once have I had issues winning the buy box with the listings I was running 2 years ago so i’m a bit baffled. The new listings are FBM, but in my experience I never had any issues with FBM listings not winning the buy box with brand registry