Have been trying to get the "Kiddo Theme" working within my on-premise Odoo v18 installation with no luck. The theme was downloaded directly from Odoo with the 18.0 version selected from here: https://apps.odoo.com/apps/themes/18.0/theme_kiddo

I followed the directions laid out in the video from Cybrosis Technologies here: https://www.youtube.com/watch?v=8Dp_UGW9I40.

Basically, I extracted the downloaded .zip file and uploaded it to a new folder on the Odoo server called "my_custom" but when that didn't work I saw others say it needed to be placed within the addons folder so I also tried that. After each change, we've restarted the server and clicked the "Update Apps List" option in the nav while in "Apps".

After following the instructions, I then Click the "Website" option in the menu and click to edit the page to see the list of themes still only showing the default theme, so something isn't working and/or we're missing something. I had our IT team check into it for me and they are stumped as well.