I have looked at mine. When I load it, first a window comes up with Basic Protection and Full Protection on it - I assume the free version is basic, because the other option is greyed out. Under basic are computer and also web/email, which checks online sites and is probably what is closing down sites.
At the top right of the window is the menu. That includes setings, choosing that you can then go to components, and clicking on that takes you to a list which includes Online Shield. That has things to tick or untick - one of those may be the over-zealous culprit, though I don't know which.