Please note that starting September the 12th, 2016 to authorize a MetaTrader 4 real account it is necessary to use real-mt4-1.alfaforex.com:443 or real-mt4-2.alfaforex.com:443 or 184.108.40.206 in field Server as IP-address. For demo accounts the server remains unchanged.
To authorize mobile MetaTrader4 please uninstall it and download again. You may also use MT4 Web terminal.
In case you have questions, please contact Customer Service at 7 (495) 785-96-69 or via online chat.
Best regard, Alfa-Forex