Legacy browser support
The main Kiosk build only supports (relatively) newer browsers.
If you are trying to run Kiosk on old browsers you can give the legacy experiment I created a try. I would suggest trying to load the demo on the device as a test before using the docker image.
Here is a link to the Github repo
A demo instance of legacy can be viewed here.
The legacy demo points at the demo instance of Kiosk (https://demo.immichkiosk.app).