Look here if you have bought revoked gifts:

1. Accounts listed above includes the owner of this account and one of his alt. trading account.
2. If you have bought revoked gifts, contacting the seller via these accounts for resolution is more effective than contacting Dispenser.tf.
3. If needed, these are the accounts to be reported to Steam support.

Instruction:
1-Log in.
2-Click what you want to buy.
3-Click the type of items you want to pay with.
4-Click Proceed.
5-Accept trade request and trade with the bot.