fba buybox disappeared

I have been selling FBA on Amazon for about 3 months. account health 208. buybox disappeared for no reason. I checked all the products and I am the cheapest seller. Prices are automatically set to the cheapest. The products are shipped from the Amazon warehouse. I have not been able to find a solution for a week and the Amazon help page cannot solve my problem. I have not received any warning and I cannot sell.

I have been selling FBA on Amazon for about 3 months. account health 208. buybox disappeared for no reason. I checked all the products and I am the cheapest seller. Prices are automatically set to the cheapest. The products are shipped from the Amazon warehouse. I have not been able to find a solution for a week and the Amazon help page cannot solve my problem. I have not received any warning and I cannot sell.

I have been seeking the help of Amazon's customer service team, who all gave me the same template, but failed to solve my problem. The buybox has been lost for a week, and the sales volume has declined seriously, which has directly affected my sales. Please help me solve this problem. Please also pay attention to this problem! Reply to my buybox as soon as possible