I Have Purchased CCBoot License But Why Only 5 Client PC's Can Diskless Boot?

First of all, please make sure you are using the genuine version downloaded from our download center.

Secondly, please make sure you have successfully registered CCBoot with your newly purchased CCBoot license.
On CCBoot server GUI Menu please click "Help" then choose "About and Register" to check if your license is properly set. If you have successfully registered, it will show as Figure 1.

Figure 1