What happens if you try to run Simplex in a terminal? Can you share the terminal output here? That will help us determine if the problem is on our end or is an upstream bug.
Ok, It seems it is actually the CLI version for terminal with no GUI
[user ~]% simplex-chat
SimpleX Chat v6.4.10.0
db: /home/user/.simplex/simplex_v1_chat.db, /home/user/.simplex/simplex_v1_agent.db
direct network connection - use `/network` command or `-x` CLI option to connect via SOCKS5 at :9050
private message routing mode: unknown, fallback: protected
type "/help" or "/h" for usage info
No user profiles found, it will be created now.
Please choose your display name.
It will be sent to your contacts when you connect.
It is only stored on your device and you can change it later.
I thought it would have been the GUI version. Non entirely clear where to get the right one.
I had tried yesterday to install it via Flatpak flatpak install flathub chat.simplex.simplex but for some reason I got an error, something like a missing URL path.
UPDATE
It works today.
I have two now. I uninstalled the CLI.
Anyways, sudo apt install simplex is the CLI version.
Is there a way to install the GUI version of SimpleX Chat that doesn’t rely on Flathub’s trust model (i.e., a third-party proxy that isn’t developer-signed) or manual installation?
You could use one of the releases from Github: Release v6.4.11 · simplex-chat/simplex-chat · GitHub From what I can tell, they use Github Actions to build the binaries, but have reproducible builds working for some of the binaries they produce, so they redo the build on a separate machine, verify it is identical, and then sign the binary, so you only end up trusting one party. The simplex-desktop-x86_64.AppImage file is hashed and signed, so it should be safe if you trust the Simplex developers and you verify the AppImage.
At least, I think that’s the case. There’s been some previous weirdness with signing and reproducible builds. I just asked on their Github if what I said above is right: