diff --git a/content/self-host/rustdesk-server-pro/license/_index.en.md b/content/self-host/rustdesk-server-pro/license/_index.en.md
index 5bb61ed..c987297 100644
--- a/content/self-host/rustdesk-server-pro/license/_index.en.md
+++ b/content/self-host/rustdesk-server-pro/license/_index.en.md
@@ -3,13 +3,13 @@ title: License
 weight: 15
 ---
 
-## Buy license
+### Buy license
 
 Please get your license from [https://rustdesk.com/pricing.html](https://rustdesk.com/pricing.html), enter a valid email address in the Stripe checkout page. The license (and the invoice in a separate mail) will be sent to your email once payment is done successfully.
 
 ![](/docs/en/self-host/rustdesk-server-pro/license/images/stripe.jpg)
 
-## Set license
+### Set license
 
 You will be required to enter license in the web console, or change license later.
 
@@ -17,7 +17,7 @@ You will be required to enter license in the web console, or change license late
 | --- | --- |
 | ![](/docs/en/self-host/rustdesk-server-pro/license/images/set.png) | ![](/docs/en/self-host/rustdesk-server-pro/license/images/change.png) |
 
-## Renew/upgrade license
+### Renew/upgrade license
 
 Renew/upgrade license can be found via the [self-service license portal](https://rustdesk.com/self-host/account/) as described below.
 
@@ -29,7 +29,7 @@ After payment, you need to proceed to the web console to activate it manually as
 
 ![](/docs/en/self-host/rustdesk-server-pro/license/images/updatelic.jpg)
 
-## Invoices, License Retrieval and Migration
+### Invoices, License Retrieval and Migration
 
 The license can be only used on one machine (for hbbs only, hbbr does not require license), if you want to migrate to the other machine, retrieve your license or download invoices, please go to [https://rustdesk.com/self-host/account/](https://rustdesk.com/self-host/account/). Log in with the email address used for Stripe checkout, unbind the old machine you want to migrate from as below, when you set the license in the new servers web console it will assign the license and register automatically in the console.