Can you please post the screenshot of your wallet? (If you are comfortable with it otherwise it is ok).
So, I want to ask that what is your wallet's default address?
Go to send payment and check from the list if your wallet is listed down there while sending payment.
I am sure that your bitcoin address is listed there and you have your money in there.
I have checked it on blockexplorer too.
https://blockexplorer.com/address/1MKqCiYtx9nc2RYdhWMkekDx6WwhBabBhR
https://www.blocktrail.com/BTC/address/1MKqCiYtx9nc2RYdhWMkekDx6WwhBabBhR
If still your are having issue with it, You can contact there support by opening a ticket maybe they will help you further.
Open Ticket for your problem.https://support.blockchain.com/hc/en-us/requests/new?ticket
There twitter linkhttps://twitter.com/askblockchainCorrect me If I am wrong thanks, Hope it will help you.