I've uninstalled IE from my PC and when I try auto-fill with Ufile 2020 ver 24.12 it says "Error trying to find an eligible web browser". I have Edge Chromium version 89.0.774.45 installed and set as the default browser (purely as a test for Ufile). I also have Firefox 86.0 installed (my usual default), as well as Chrome 89.0.4389.82. No joy, no love, and no tax returns filed for 2020 (yet).
Come on Ufile/Thomson Reuters, get your stuff together.