Are you sure that you cannot login? In the screenshot I can see that you are logging into OpenWrt and then you are trying to run the command ssh root@openwrt.lan mkdir -p /tmp/luci-offline
@trendy spotted it... @Kenzo - the command you are running makes no sense. You are already connected to the router via ssh and it appears to be working even when you issue a strange command. What you are seeing is the ssh session that you've attempted to start (while already ssh'd into the router) with an argument that doesn't belong there, so ssh (on the router) is bailing out, as it should. everything seems to be working properly.
those commands would be run from the terminal on your computer without explicitly ssh'ing in first. The first line is telling your computer to send the mkdir command over ssh to the router. The second line copies the file from the computer to the router using scp, the third line tells the computer to send the installation commands again via ssh. If you're going to use those commands, you would do this without starting an ssh session to the router.
What is the problem exactly?
I understand you are trying to install Luci on snapshot. Do you have downloaded on your pc the necessary packages? It would be easier to connect OpenWrt to the internet and run the opkg update; opkg install luci rather than what you are struggling with.
Be careful... you have made a directory called /temp/luci-offline -- this is not what the guide said to do. It specifies /tmp/luci-offline -- the difference is really subtle, but important. It is /tmp/ not /temp/, and this matters because /tmp/ is RAM based storage vs flash based storage for the directory you actually created. These ipk package files should be copied to RAM and installed from there -- after the package is installed, the actual ipk can be deleted... when saved in RAM, this happens essentially automatically when you reboot, and it also ensures that the package file itself won't consume valuable flash storage space while you are trying to install the packages, potentially leading to a condition where the flash storage is completely full.
So... delete the files in /temp/ and copy them again to /tmp/
Apart from this "aesthetic" problem everything seems to be working good.
So me introduce myself: I speak very little and cannot write in English.
I installed OpenWrt for the first time on a Netger WNR3500L and it still works also with latest 21.02.1 excellent.
Where I live, here in Germany, we have a single router and I have also seen up to 50 devices connected ...
A few months ago I bought this Tp-link RE455 Repeter with the Lan Port to create a private network with the Netger compared to the shared Router in my building.
The problem is that the Netgear is very old and I wanted something faster to transfer data locally.
Now thanks to OpenWrt I have transformed a normal repeter into a travel router.
Some clarification on snapshot releases:
I have installed the factory snapshot do I have to install the update? Or to update how about the stable release from opkg?