Please see the chat below. I don't see a place here to attach a Doctor's note. What should I do?

And what is the reason why you're needing to have your exam rescheduled?
12:16:56 PM
Me
I am recovering from spinal surgery and when I scheduled the exam I thought I'd be fine by September 4th but I am in a lot of pain
12:17:32 PM
Katherine V
We can definitely reschedule your exam for another date and time.
12:17:56 PM
Me
Thank you
12:18:00 PM
Katherine V
Please provide us with three dates and times that you would like to be rescheduled for.
12:18:11 PM
Me
9.11.19 @ 12pm. 9.10.19 @1130 or 9.10.19 @11 in that order of preference
12:19:54 PM
Katherine V
Verifying with management, if you don't want to pay the fee to reschedule, your test sponsor will need Medical documentation.
12:21:30 PM
Me
No problem
12:22:08 PM
It's not a problem but may I ask why, since it's more than 24 hours away?
12:22:37 PM
Katherine V
When you're showing scheduled at a test center, you can only reschedule after 72 hours without a fee. For an online proctored exam, it's more than 24 hours before incurring a fee. I do apologize for the confusion.
12:24:44 PM
Me
ok
12:25:06 PM
Katherine V
Here's the link to contact your test sponsor:
https://hudhousingcounselors.hud.gov/support
12:26:00 PM