Error accessing device

I’m not an expert and, after many digging to the forums, I’ve not still been able to solve my problem, I would appreciate some advise here.

I’ve followed step by step this tutorial

All is working fine until I try to access to the public url… I’ve this message whatever I try,

Any suggestion?
Thanks a lot in advance

I solved the problem using this repo

@pinxe welcome to the forums, I’m glad you got it working! The Screenly team are going to be working on an update to their application, but in the meantime you can use mine as you found. As soon as the official one is ready I’ll delete mine. You can find the issue here:

Thanks a lot @chrisys