disable already used trial version

products.tpl

@@ -243,7 +243,7 @@
 							</tr>
 						</table>
 						{if ($product.pricing.type == 'free') && in_array($product.pid, $clientPids)}
-							<div class="btn btn-primary btn-block" style="position:absolute; left:20px; bottom:10px; right:20px; height:40px; width:unset;padding-top:6.5px;" id="product{$product@iteration}-order-button">
+							<div disabled class="btn btn-primary btn-block" style="position:absolute; left:20px; bottom:10px; right:20px; height:40px; width:unset;padding-top:6.5px;" id="product{$product@iteration}-order-button">
 								alreadyused
 							</div>
 						{else}