I did not receive my invoice? MAMP GmbH September 13, 2018 09:15 Updated Follow You should have received a link to your invoice on your order confirmation email from Paddle. Related articles How do I recover my license key / serial number? I cannot get my Remote site to work? Are updates free of charge? I want to revert back to MAMP PRO 4.5. Where is my MAMP PRO 5 database data located?