ERROR 4752

[Wael Sami Daou]

Hello friends, I am running an EA on one of my accounts on activtrades, and at least once a week I get a "4752 error" message, I searched and the error means "Trading by Expert Advisors prohibited"

I contacted  activtrades and they did not inform me anything besides that the problem is not with them, but I use the same EA in other accounts of the same brokerage and nothing happens. Can someone help me?