Ampersand said: @andrewvanmarle @jtwood Click on the bell icon on the top right - it probably has a red circle with white numbers in it. That will generate a pop up list of all your notifications. At the bottom is a button "Mark all as read."
stikxs said: If you click on the Home in the "Home› MtGPQ General Discussion" path you can get to the category list and the triple dots on the right of each has a mark all read option.