Step 1: The product description looked like this.
Step 2: Log into WHMCS admin and click on System Setting
Step 3: After that click on Product/Services.
Step 4: Then click on the edit icon to update the product description.
<ul>
<li>2 GB RAM</li>
<li>1 CPU Core</li>
<li>60 GB SSD Storage</li>
<li>3 TB Transfer</li>
<li>1 Gbps Network In</li>
<li>1000 Mbps Network Out</li>
</ul>
<div class="expiredt">
<h6>Risk-free for 90 days.</h6>
<p>Get 2 months free with anual prepay.</p>
</div>
Step 5: Put the description in this pattern as mentioned above and paste it in your product description and change the content accordingly.
Step 6: After added the product description in the given field click on save changes button.