CustomUI not appearing on phone

Hi,
I’ve successfully set up a nice CustomUI panel for my TV remote. However for some reason it doesn’t appear on my phone (not matter the browser). Appears fine on 8" tablet 10" tablet and computers, but not on my 5.5" OnePlus One.

Tablet UI (TV remote shows fine):

Phone UI (TV remote panel blank):

Any ideas as to why that might be?

I have tried adjusting the size of the tiles, but it doesn’t seem to change anything. Never appears on the phone.

Yes, that’s what I’m using.

Aha! I think you’ve hit the nail on he head. I was missing the entry under the es5 frontend line:

frontend:
  extra_html_url:
    - /local/custom_ui/state-card-custom-ui.html
    - /local/custom_ui/state-card-tiles.html
  extra_html_url_es5:
    - /local/custom_ui/state-card-custom-ui-es5.html

I think I assumed that it would have to be a es5 specific file as it was for ‘state-card-custom-ui-es5.html’.

Silly me. Should have read the readme more closely.

Thank you!