It depends on broker, your OS (Windows, Linux, or any), etc. Besides, the signals does not work during the weekend (and this is the weekend today).I am just posting some information and you can collect the reply based on your broker, OS and so on:
Forum on trading, automated trading systems and testing trading strategies
help about signals tab
Alain Verleyen, 2014.03.28 13:23
That question has been asked numerous time, please do some search before posting : MQL5.com Search - Quick, Easy and Convenient!
About signal tab :
Contact your Broker, not all Brokers offer signals on MT4
Is this enough ?
Metatrader4 / Linux / Signals
Aleksey Pak, 2015.05.18 09:43
I can't not log in to mql5 community, Using MT4 on MAC
Aleksey Pak, 2015.07.09 11:43
Sergey Golubev, 2013.12.23 16:51
you should read and read ...
and read articles.
No any personal consultant here sorry ... people may help but just for some concrete questions.