arduino dosent work

[hellored]

I try to make the arduino extension work but on firefox witch is recomended the scratchx site dosnt work properly. i upload the extension file for other browsers and it does nothing it gives me the same window to give the extension file again. I tried it on chrome but i see no yellow or green button on the board. Please help me i need it to work

[hellored]

I made a mistake i managed to make it in the site but still i see no arduino light in the blocks sector

[Logabe]

Are you using linux? i'm having a similar issue