Today, I will show you how to subscribe for CWPpro in your free version of CentOS Web Panel, and if you have not installed your CWP first? You may check my, CentOS Web Panel series here.
At this point, I assume you have access on your CentOS Web Panel already. If yes, let us proceed then.
Go to support.centos-webpanel.com, from here click on ORDER SERVICE.

Look for CWPpro service and click on Order Now.

At this point, enter your Droplet (Server) IP address, and select your desired Billing Cycle. What I suggest, go for a $1 Monthly first, just in case, you did not like the pro version.

Click on Add to Cart, once completed.
At this point, just make sure you place the order until checkout page and once complete, you should have an active service from CWP team.
After the pro version purchase, let us proceed in updating our CWP license to pro version. To do so, run this command below via SSH:
sh /scripts/update_cwp
From here, you should be all set, and you should have indication you are now running in CWPpro version as shown below:

Great Job.