6th and 7th Accessory Slot

I just got back into Terrari because I wanted to beat all of the achievements. All of my worlds were corrupted, so I started a new one. When I looked at my character my 6th and 7th accessory slots were greyed out, and when I removed the accessory in them they disappeared. I wasn’t too worried, but when I beat Wall of Flesh yesterday, it didn’t give me an onion to get my 6th slot, so I’m not sure why. I tried doing so research, but couldn’t find anyone having the same problem. This is in a classic world.