When I click on the Cookie button at the bottom left, nothing happens

When I click on the Cookie button at the bottom left, nothing happens.
If all goes well, the visitor should then be able to edit the accepted cookies.
But that option does not appear.
How could this happen?
And how can I fix it?
This concerns this website: injekracht.com

I just discovered that it is only invisible with Firefox.
But when I looked closer I saw that the Cookie Preferences page is behind the website.
I can only just see the Save button at the top right.
Should a z-index be set somewhere for this?

Hi
Please clear your other browers cache because it also appears on Chrome by my side
CEd

OOPS sorry.
I cleared the Joomla cache and now it is working well.

Thanks for your support.

Hi,
Unfortunately, things don't go well.
If I click on the cookie image at the bottom left, the preferences do not appear on a new page, but at the bottom of the website page.
Then I can choose, for example, Accept all.
But then nothing happens.
The Save button is at the top next to the header.
But clicking Save doesn't help anything.
Clearing the Joomla cache and browser cache does not help with this.
What else could it be caused by?

I still find it strange.
This afternoon I clicked on the cookie icon and the preferences page appeared neatly.
Then I pressed Decline All and then Save.
When I pressed the icon again, the preferences page appeared at the bottom of the web page.
When I cleared the browser cache and Joomla cache, the browser worked fine again.