Liam, think for a moment what your snake has faced in the last 2 weeks of it's life (which to a snake is about an eye's blink of time).

- new owner and all the stress of being hauled off to a new home
- incorrect temps both now and likely previously
- mite investation which I assume it came with, so a perhaps long standing health issue
- repeated vet visits and handling to administer meds
- complete cage rip down and cleaning
- repeated attempts to feed and refusals

Liam, it's no wonder this snake won't eat, in fact, it's rather expected it would refuse. Snakes must feel healthy, secure and safe in order to hunt and that doesn't mean live or f/t or p/k prey, it means any hunting, constricting and swallowing behaviour. Sick, stressed snakes do not generally feed. To hunt, to constrict and to swallow a whole prey item is a big physical demand on their systems. As well as being a very vulnerable time for them as they cannot fight nor flee very effectively while dealing with their prey.

As suggested you need to get your temps in line and properly monitored so you actually know what the temps and humidity are. You should likely replace those hides with small, dark and identical hides (a dollar at most at any dollar store to buy a couple of dark plastic small bowls). The addition of the crumpled newspaper will help the snake feel safer. Handling only for meds/vet requirements. A quiet room, low light and little to no interference. This snake is a decent weight. It's not going to die from missing a few feeds but it won't do well if it continues to refuse due to health and housing issues.