@standupmobile Yes, when sending/getting an image it shows a cloud symbol in e2ee chats for me too.
However it looks the images are still sent. After a click on the symbol, it will open a new window with a download button. At least this seems to work as a workaround in such cases.
There is FluffyChat in OpenStore for using Matrix on Ubuntu Touch, but it cannot handle encrypted messages.
It's still possible to use Matrix E2EE via Pantalaimon. It acts as reverse proxy daemon and handles the encryption for FluffyChat (and also for other clients like uMatriks). Pantalaimon is not available from OpenStore (anyone willing to handle this task, go for it!) but the setup is still easy. There are some tricky parts though, this is why I created this guide.
In short:
These are the basic steps. Here is a more detailed guide:
I. As I mentioned Pantalaimon is not available from OpenStore but it can be easily downloaded form here:
https://git.sr.ht/~thrrgilag/pantalaimon-ut/refs/0.6.0
Choose the right package - arm64 or armhf (<-this is e.g. for Nexus 5) - download and check sha256 hash via:
sha256sum pantalaimon.thrrgilag_0.6.0_armhf.click
More info can be found here: https://thrrgilag.net/post/pantalaimon-ut-0-6-0/
II. Open UT Tweak Tool, choose Click install in Menu/System and install the downloaded Pantalaimon package. If there is a Signature check failed error message, it might be the wrong package for your device.
III. After Pantalaimon was installed, start Pantalaimon UT from the drawer. Configure the Homeserver (add Homeserver) and proxy. If you have an account on matrix.org, the default settings will work fine. Default proxy settings work fine as well. Start the service with the first switch.
IV. IF you used FluffyChat before, it's important to log out first. Otherwise choose Pantalaimon as Homeserver (hamburger menu/Change homeserver) and log in with your matrix id.
V. At this stage e2ee messages might not be readable (decrypted) yet, but chats should be available. For Pantalaimon there is device verification required.
This is why I logged in using the browser on a separate device (computer) and the Element webapp via element.io and used this device for verification (under "Security&Privacy").
VI. Open Terminal on UT, start panctl via the command:
/opt/click.ubuntu.com/pantalaimon.thrrgilag/current/panctl
If you start to type commands in panctl, it will open a little window with commands to choose from.
The command should be (using your matrix id two times):
start verification @yournick:matrix.org @yournick:matrix.org ABCDEFGH
<-this last part is the device_id as show on Element under "Security&Privacy" but for getting the device_id you can also use the command: list-devices @yournick:matrix.org @yournick:matrix.org
The terminal output should be something with "Successfully started the key verification request".
In the Element webapp there will appear a window to Accept the request. Verification uses a list of symbols (shown in the Terminal as well).
In the Terminal use the following command:
confirm-verification @yournick:matrix.org @yournick:matrix.org ABCDEFGH
After that also confirm in the Element webapp that they match. Under Security&Privacy Pantalaimon should be now "Verified". It will also show FluffyChat as signed in.
VII. After the verification was completed, it required a restart of Ubuntu Touch for me. After restart it started to work properly (FluffyChat opened with the matrix user logged in). Sometimes I receive messages on the UT splash screen saying something like: "You did not send messages with FluffyChat yet", although I have already been using FluffyChat with Pantalaimon.
(Some hints for verification in general from this blog might be helpful: https://www.cogitri.dev/posts/10-pantalaimon-setup/ )
It's been working fine for me so far. I'm not sure but it looks sending images do not work. FluffyChat is really nice, simple and easy to use.