Depends on the wallet software/service you use.
I don't use any software just go online i don't like these kind of software but i am trying to switch to xapo wallet and see how it does.
Remember, you can't access private key when using XAPO. So if XAPO goes, your money goes. Try to stick with Blockchain.info/wallet or use a desktop client. You can speed up the loading by downloading Blockchain.info Chrome/Mozilla app or Mac desktop wallet.
Try once more. It happened for me a few times due to lack of speed, sometimes due to frequent clicks.
~~MZ~~