I bought a ManyChat number and I don't want use anymore

Hi! I bought a ManyChat number to use on WhastApp Bussines automation but now I bought a new SIM here in Brazil to make the same automation. So my problem is, when I start the connection with Meta, ManyChat only show me a option to use the line that I bought before and don’t let me set another number to start the connection with Meta. Can someone help me?