Hi @mia, same here for my Debian Bullseye Installation. Updating to 3.92.60014 did not resolve the issue. After starting insync in a terminal via insync start --no-daemon i get the following error messages:
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.