Failed to communicate with QUIC.cloud server: Unknown error: Fail to process

I disabled all the plugins and then again applied for domain key.

got below message

Applied for Domain Key successfully. Please wait for result. Domain Key will be automatically sent to your WordPress.

but after a while when the page is refreshed domain key is still not there

error

Notice:
There was a problem retrieving 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 https://getmask.in/wp-json/litespeed/v1/token failed.

2) Our Current Online Server IPs was not whitelisted.

Please verify that your other plugins are not blocking REST API calls, whitelist our server IPs, or contact your server admin for assistance.:

tried 3rd time

this is the message i am getting

Failed to communicate with QUIC.cloud server: The callback validation to your domain failed. Please make sure there is no firewall blocking our servers. Response code: 401

with all plugins disabled

I got this same problem… I did hit “Sent to Lightspeed” button

Already sent the report to lightspeed

Report number is already mentioned in the first support request

Again sent the report

here is the report number

Report number: FMPSWGGT

Report date: 01/07/2022 04:31:44

Hi,

you are using OpenLiteSpeed with CloudFlare

please follow this https://openlitespeed.org/kb/show-real-visitor-ip-instead-of-cloudflare-ips/

to enabel true client IP

best regards,

such a small thing and i missed it.. just switched off that orange toggle on cloudflare DNS and this just worked fine.. sorry to have you guys bothered..

Thank you @qtwrk for pointing out where i went wrong.

this has been solved..