I would recommend against inputting your keys in blockchain.info since they are very unreliable. Try downloading Electrum, create a wallet and sweep/import the Bitcoins (go to wallet>private key). Sweep means that the funds will be transferred to one of the address on the wallet, import would mean that the private key are imported directly, change will be sent back to the original address. If you sweep it, you need not make a backup of the private key you imported but you need to make a backup of the seeds. If you import it, you need both most probably.
If possible, do give us an address so we can find out what's wrong. Managing private keys if you don't know what you're doing can be dangerous.
Thanks for your fast reply.
Transactions of 2 bitcoins date back from august on its earliest, so why would it give a deficit in my balance now all of sudden?
My receiving adress is: 1MMW5AfjkJod8vHDi1Vji8KEqQyriX4tyC
If this is what you ment?
I will download Electrum now and try to transfer my private keys to that wallet. Although im still not sure how this would be done exactly.
So first i should sweep the remainder of my wallet, by sending the displayed spendable amount to another bitcoin adress in my multibit classic wallet? And then i should import the private keys through another wallet platform, such as electrum, so that the remainder of my balance that is not displayed will be automaticallys sent back to my multibit classic wallet?
Correct me if im wrong
Thanks!
edit: I could send a screenshot of my wallet with the transaction history if it helps?
There is an option to do so in Electrum. Download Electrum, create new wallet, remember your seed and follow my steps.
To extract your private key from MultiBit classic, select your wallet at the side, go to Tools> Export Private Keys. Enter the directory that you want it to be extracted to and press Do not password protect export file. You can open the .key file with any text editor and there will be a long string of letters that start with 5, L or K. That is your private key.
Problem solved, finally
I managed to sweep my wallet through blockchain.info, and have now transferred all bitcoins to an electrum wallet.
Your advice is really appreciated. Thanks!