First, verify if the Robux has been credited to your Roblox account by checking your transaction history directly on the Roblox website.
Robux transfers may take up to 24 hours to appear in your Roblox account. This is normal due to processing times and system verification.
If your Robux doesn't appear after 24 hours, please contact our support team with your order details and we'll investigate the issue promptly.