Just know you're not the only one - I luckily got my accommodations, but it took until Friday for me to be able to register for a slot.

Literally because of my accommodations Prometric couldn't find me a time slot, for about a week kept saying "we've escalated it and will reach out to you in 3 business days" (they ofc did not) and then when I reached out to LSAC the first time, they hit me with the "that's a Prometric issue, not our problem". Second time was the charm, just ask to speak to their supervisor and they will elevate the situation accordingly.

Everything will (hopefully) work out - wishing you the best of luck on your exam!