You will need the extension to use your checkout links in your discord webhook.
If you have the extension installed it will automatically redirect you when clicking the link in your webhook.
How to checkout via PayPal webhook on mobile (Android Only)
To load the extension into Kiwi it need to be an .CRX file.
Step 1. Install Kiwi browser using play store Step 2. Download .CRX file onto device
Step 3. Open kiwi -> 3 dots -> extensions
Step 4. Press load and locate "Carnage extension.crx"
Step 5. Enable Carnage extension and you are to go.