It may operate for the 24 hours of the day. Many are only available during work.

Perhaps technical issues, which have started to surge within odd working hours, might be catered for as urgent needs to seek help through live chats or phone services while such needs never concern themselves with working hours.
E-learning tools: Choose a broker that may offer some learning resources, be it in the form of webinars, articles, tutorials or any other kind of research that might help you in making investment choices.
Customer support will save you so much time and probably a little stress if there is an emergent need for you to attend to something more important.