@anders-0 did you get by this... I'm seeing the same thing. Getting to the flic screen but can't save it.

Is there no 'change duration' on Hue scenes?
On LIFX you simply specify the Duration(hⓂs) on the scene and trigger it.

See my post "[Solved] Google Assistant action doesn't work with the screen off" for a workaround with the screen off

Hi! We're super sorry for the confusion. Flic single doesn't work with IFTTT, only our regular Flic buttons do.
Could you please send us the link to where you saw the confusing information? So we can update it as soon as possible!
To apologize for the inconvenience, if you've purchased through flic.io/shop, we can refund your purchase and we can give you a discount code if you decide to purchase a normal Flic. Remind us with an email 😉
Thanks and sorry again,
Nadia from Flic

I do actually have the same issue, the flic app with other actions work well, the unified remote itself too. Though the actions thru filc to unified remote are just not triggered.
My setup looks as follwos:

OnePlus 3 Phone with Android 8.0.0 Flic App on the Phone and one Flic Button connected Unified Remote App installed on the Phone and a Server Client on Windows

Does anyone have a workaround here?

Couldn't agree more! BT limits this product in immeasurable ways. There must be a way to extend the range of a button (even when paired to a hub). I get about 40 ft when factoring in walls in my house.