It occurs due to your transaction request can still being processed. To know your transaction status, please, go to one of the links specified below (depending on the currency you have made deposit), click “loupe” icon and enter your Txid number.
Blockchain Explorers list:
BTC - www.blockchain.com
ETH - www.etherchain.org
LTC - www.bchain.info/LTC/
BCH - www.bchain.info/BCH/
ETC - www.gastracker.io
ADA - www.cardanoexplorer.com
DASH - www.explorer.dash.org
DOGE - www.live.blockcypher.com
NEO - www.neotracker.io
XMR - www.moneroblocks.info
XRP - www.bithomp.com
ZEC - www.bchain.info/ZEC/