Allocations on TRONPad are purchased with USDT. Please ensure you have enough TRX in your wallet to cover the gas/gwei/transaction fees.
Tronpad has merged with KccPad to Polypad, please see Polypad category for further information (https://bluezilla.jitbit.com/helpdesk/KB/View/45966211-polypad-introduction-faq-articles)