In addition to what Bogertophis said in this thread. What are you offering food wise? Is it the exact prey item that the breeder offered? If they offered a live mouse, are you? If they offered a F/T rat, you should be too, etc.
Its imperative that a) you offer the identical type of prey (mouse or rat and the same size) and b) be consistent in terms of if they offered live or frozen/thawed.
Additionally, being a your first BP, you may not know how to appropriately defrost prey (if frozen) and to warm up correctly and how to offer to entice your snake.
Please answer the above questions and if F/T we can help you with steps to properly feed.
This item should be addressed after the husbandry issues are fixed (hides, etc.).