are you suuure it has been confirmed !!!
Yes, it is definitely confirmed. 86 confirmations so far, 0.023045 BTC:https://blockchain.info/en/tx/db4c02c63e43a284c4b9dd0ad3206f61ce6f622e825412c8bbc37567485665ca
(you even said it had 73 confirmations in your subject!)
You need to contact their support - looks like there are several ways of doing so on their contact page - this is a problem with their service or their wallet.
There may be a method of exporting the private key from that address if you are using their online wallet or app and importing it using something else (or sweeping).
thnks for your help .. i contacted them and they said they have a lot of transactions so they may take time .. i am really upset because i need this money to pay an invoice ... please could you suggest to me another wallet that i can reserve my money in securelly with some options like free exchange into dollar and some options of withdraw .. i will appreciate that .
that's a description of exchanges, not wallet. exchanges are less secure that actual bitcoin wallets for many reasons. they don't give you full control over your bitcoins and you can lose your coins if they get issues or is scamming you.
use real wallets instead if you want security.
bitcoin core
electrum
copay
multibit hd
electrum
copay
multibit hd
multibit have been abandoned by the developers. I wouldn't use copay either because of this reason. for new users I'd suggest electrum.
edit:
you can find more wallets recommendation here > https://bitcoin.org/en/choose-your-wallet
