Fix images

04_gettingstarted/02_sandbox/01_sandbox.md

@@ -15,7 +15,7 @@ The only requirement to start using the Open Gateway Sandbox is to join one of o
 
 Once you are approved in at least one of our programs and you log in to the private area of the Telefónica Open Gateway website, you already have access to the Sandbox web console as a program member from the Technical Toolbox section.
 
-![Access to the Sandbox console from the website private area](images/access.png?raw=true)
+![Access to the Sandbox console from the website private area](https://github.com/Telefonica/opengateway-developers-website/raw/main/04_gettingstarted/02_sandbox/images/access.png?raw=true)
 
 ## Registering your application
 
@@ -29,7 +29,7 @@ For every application you create, you will need to follow these simple steps to
 
 1. Select the APIs you want your application to test. It could be one or several APIs depending on your use case.
 
-![API selection](images/api-selection.png?raw=true)
+![API selection](https://github.com/Telefonica/opengateway-developers-website/raw/main/04_gettingstarted/02_sandbox/images/api-selection.png?raw=true)
 
 2. Select the usage mode for your application. You have the following options:
 
@@ -47,7 +47,7 @@ For every application you create, you will need to follow these simple steps to
 
 		The mock mode will also make available for you some APIs that are not still commercially available on our mobile operators, so you can test them in advance.
 
-![Usage mode](images/usage-mode.png?raw=true)
+![Usage mode](https://github.com/Telefonica/opengateway-developers-website/raw/main/04_gettingstarted/02_sandbox/images/usage-mode.png?raw=true)
 
 3. Briefly describe your application as part of the application onboarding process so that mobile operators can understand the purpose of your tests and validate it.
 
@@ -60,30 +60,30 @@ For every application you create, you will need to follow these simple steps to
 	- **Description**: A brief description of your application's use case related to the usage of the APIs.
 	- **Redirect URL**: (Optional) For frontend triggered authorization flows, you must indicate an URI hosted on your servers for the flow to call back to your code for it to complete authorization and perform the service API request (check [frontend triggered authorization flow](/authentication/frontend.md) for detailed information).
 
-![App information](images/app-information.png?raw=true)
+![App information](https://github.com/Telefonica/opengateway-developers-website/raw/main/04_gettingstarted/02_sandbox/images/app-information.png?raw=true)
 
 4. Check the specifications and accept the terms and conditions per API and operator.
 
 	Each mobile operator has its own terms and conditions for the usage of each API, and its own technical specifications you will want to consider when it comes to consuming them, so you will need to accept them for each API you want to test on each operator you have previously selected.
 
 	Since our Sandbox is just a free testing environment, specifications are not binding and conditions are meant for safeguarding privacy, even given that only whitelisted phone numbers can be used when testing in the Production mode with our mobile operators. In the case of the Mock mode, a global simulated operator will provide you with mock responses being the terms and conditions of the program you are member to that applies.
 
-![Check specifications and conditions per API and operator](images/app-configuration.png?raw=true)
+![Check specifications and conditions per API and operator](https://github.com/Telefonica/opengateway-developers-website/raw/main/04_gettingstarted/02_sandbox/images/app-configuration.png?raw=true)
 
 5. Review the summary and confirm
 
-![Review the summary and confirm](images/review-confirm.png?raw=true)
+![Review the summary and confirm](https://github.com/Telefonica/opengateway-developers-website/raw/main/04_gettingstarted/02_sandbox/images/review-confirm.png?raw=true)
 
 6. Once you have confirmed, your application is granted access to the Sandbox API gateway with its credentials.
 
-![alt text](images/app-created.png?raw=true)
+![alt text](https://github.com/Telefonica/opengateway-developers-website/raw/main/04_gettingstarted/02_sandbox/images/app-created.png?raw=true)
 
 To get your application credentials and use them in your prototype, go to the application details page on the My Apps section, where you will find the following information:
 
 - **Client ID**: A unique identifier for your application.
 - **Client Secret**: A secret key to authenticate your application to the APIs.
 
-![alt text](images/app-credentials.png?raw=true)
+![alt text](https://github.com/Telefonica/opengateway-developers-website/raw/main/04_gettingstarted/02_sandbox/images/app-credentials.png?raw=true)
 
 Note that if you selected the Production mode, you will have to wait for the approval of your application by the mobile operators you selected. When your application status is "Completed" you are good to test the APIs with your applications's credentials no matter what end-user phone number you are using. If you only selected the Mock mode, you can start testing right away.