Oops. Since the latest update, my thinkorswim web version is not responding properly. I can get the login screen, I login, the get a blank screen. This happens on both Firefox and Google platforms, using the latest Windows 11. It worked before the latest update, but not after. I have shut down most of the protections, one at a time, but no help. Is there a way to disable Avast completely to see if there is a solvable problem therein?