Can’t get Domain Key

Link to your site: https://myk-autoescola.com
Instructions to reproduce the issue: Click on request domain key, wait and got error message:

There is a problem receiving your domain key. Please click the Waiting for Approval button to retry.

There are two reasons why we might not be able to communicate with your domain::

1) The POST callback to /wp-json/litespeed/v1/token failed.

2) Our Current Online Server IPs was not whitelisted.

Report number: NYYUOWVK

Disable All Features: Did once, no change.
Disable Only Cache: Disabled Everything, no change.
Change Version: Did from 443 to 441, no change.

Did a GET and POST request using Postman, for both the same response:

{
  "code": "rest_forbidden",
  "message": "Sorry, you are not allowed to do that.",
  "data": {
    "status": 401
  }
}

From Debug log:

11/17/21 18:06:40.900 [54.86.50.139:41908 1 hFV] ?? ------GET HTTP/1.1 (HTTPS) /wp-json/litespeed/v1/token
11/17/21 18:06:40.900 [54.86.50.139:41908 1 hFV] Query String: test=santoro
11/17/21 18:06:40.917 [54.86.50.139:41908 1 hFV] [Router] get_role:
11/17/21 18:06:40.919 [54.86.50.139:41908 1 hFV] [Optm] init
11/17/21 18:06:40.926 [54.86.50.139:41908 1 hFV] [Vary] Rest API init disabled vary change
11/17/21 18:06:40.930 [54.86.50.139:41908 1 hFV] ?? ? Not our cloud IP
11/17/21 18:06:40.930 [54.86.50.139:41908 1 hFV] ?? Load remote Cloud IP list from https://quic.cloud/ips
11/17/21 18:06:41.637 [54.86.50.139:41908 1 hFV] ?? ? Not our cloud IP
11/17/21 18:06:41.638 [54.86.50.139:41908 1 hFV] ?? Load remote Cloud IP list from https://quic.cloud/ips
11/17/21 18:06:42.356 [54.86.50.139:41908 1 hFV] ?? ? Not our cloud IP
11/17/21 18:06:42.357 [54.86.50.139:41908 1 hFV] ?? Load remote Cloud IP list from https://quic.cloud/ips
11/17/21 18:06:43.068 [54.86.50.139:41908 1 hFV] ?? [Tag] Add --- HTTP.401
11/17/21 18:06:43.069 [54.86.50.139:41908 1 hFV] [Ctrl] not cacheable before ctrl finalize
11/17/21 18:06:43.070 [54.86.50.139:41908 1 hFV] [Router] get_role:
11/17/21 18:06:43.070 [54.86.50.139:41908 1 hFV] [Vary] role id: failed, guest
11/17/21 18:06:43.071 [54.86.50.139:41908 1 hFV] [Router] get_role:
11/17/21 18:06:43.071 [54.86.50.139:41908 1 hFV] [Router] get_role:
11/17/21 18:06:43.071 [54.86.50.139:41908 1 hFV] [Core] Silence Comment due to REST/AJAX
11/17/21 18:06:43.072 [54.86.50.139:41908 1 hFV] [Optm] bypass: Not frontend HTML type
11/17/21 18:06:43.072 [54.86.50.139:41908 1 hFV] End response