Background of the issue:
I am trying to register WPML on my subdomain hidden link. I've generated site keys for both hidden link and hidden link, but I receive an error when attempting to register the site.
Symptoms:
I receive the error message: 'Unable to register: Site key not matching'.
Questions:
I'm encountering an issue while trying to register WPML on my subdomain hidden link. I've generated site keys for both hidden link and hidden link, but when I attempt to register the site, I receive the following error:
Unable to register: Site key not matching.
Environment & Setup:
Hosting: CyberPanel + LiteSpeed
WPML Installation: Tried both OTGS Installer and manual upload (downloaded and activated all necessary WPML components via WordPress)
WordPress Type: Single-site installation on a subdomain
Troubleshooting Already Performed:
Generated and tested site keys for both main domain and subdomain
Verified WordPress Address (URL) matches key generation
Unregistered and re-registered WPML
Cleared all caches (browser, plugin, server-side)
Checked firewall settings — no indication of WPML being blocked
Verified that WPML API Server and Toolset API Server both show green checks in Installer System Status
Tried with LiteSpeed Cache disabled during registration
No custom entries for site key in wp-config.php
Error Details:
Error message from WPML Installer:
Unable to register: Site key not matching subscription-fetching 2025-16-04 10:04:56
No visible errors in the WPML Installer support tab aside from the registration rejection
Site URL is confirmed to be hidden link
Despite all efforts, the registration still fails. I would greatly appreciate any help you can provide to resolve this issue.
Thank you!
What steps can I take to successfully register WPML on my subdomain?
