OSx Big Sur Dynalist app failing

Dynalist standalone was working fine a few days ago, suddenly stopped. Running the app fails to open a window anywhere. I’ve uninstalled the app, deleted the application folder, and re-installed twice, including reboots of the machine between every step. Doesn’t seem to be making a difference. The Web app still works fine. It may have coincided with the latest Big Sur update to 11.2.2.
Any suggestions?