By default, LaunchCDN blocks a number of bots from popular backlink checking tools (ie Ahrefs, Moz, Majestic) as well as several other less popular tools and some other nuisance bots that commonly scan web sites and cause high resource usage without any benefit to your site.
In addition, some of our CDN providers including StackPath and Cloudflare, will block access from malicious IPs or some common troublesome bots as well.
You can disable this, by adding the following line to your site's .htaccess file:
Allow from env=bad_user_agents
You can check the status of the bot blocking against common backlink tools using our free Bot Checker tool at https://www.botchecker.org/