“I uploaded the plugin but I don’t see Linkilo in my admin menu”
The plugin probably didn’t activate. Go to Plugins → Installed Plugins, find Linkilo in the list, and click Activate. If Linkilo isn’t in the list at all, the upload failed — re-download and try again.
If activation stops with “Linkilo 3.0 was not activated”, another copy of Linkilo is still active on the site. Linkilo 3.0 refuses to run beside an older copy. Deactivate and delete the older Linkilo under Plugins, then activate 3.0 again.
“My license won’t activate”
You enter the key under Linkilo → Settings → Advanced → Licensing (on a fresh install the Linkilo menu opens straight onto the license screen). Paste it into the License key field and click Activate License. If that fails, check these in order:
- No extra spaces in the key. Copy from your purchase email and watch for trailing spaces when you paste.
- License not expired. Check the purchase email for the renewal date.
- License has activations left. Multi-site licenses cap how many sites can use the same key. If the message says the key has reached its activation limit, deactivate it from a site you no longer need — see How to remove a website from your license. Since 3.0,
wwwand subdomains of the same domain count as one site, so they don’t use extra slots. - The key is registered to a different URL. If the message says the key is not active for this URL, add this site under Manage Sites in your linkilo.co account — see How to add a site to your license.
- Your site is reachable from our server. License validation pings our server. If your site blocks outgoing HTTP requests, validation fails. Check with your host.
Other things to try
- Try activating in an incognito browser window
- Deactivate all other plugins and retry
- Check that PHP is 7.4 or higher (we recommend 8.1+)
- Disable your CDN temporarily and retry — some CDNs cache the activation endpoint and break the handshake
- Check with your host that nothing is blocking outbound HTTPS to
linkilo.co
“Connection to license server failed”
Your server can’t reach our license endpoint. Usually a firewall or proxy issue. Have your host whitelist *.linkilo.co and retry.
“It was working, now it says the license is inactive”
Linkilo re-checks your license every few days, but only while someone is in the WordPress admin or a scheduled task runs — never while a visitor loads a page. If a re-check fails (expired subscription, site removed from your account, server unreachable), the Linkilo menu collapses to the license screen. Fix the cause, then click Activate License again.
Still stuck?
Submit a ticket with your license key (we’ll look it up), your WordPress version, your PHP version, and a screenshot of the activation error.
Last reviewed for Linkilo 3.0.0 (October 2026).