Cover not working on phone layout

[naperonable]

Hello,

The Cover option is not working on my phone layout (using Chrome on an android phone) although it is working fine on the computer version.
It used to be working fine on both devices, here is an example:
https://victorlabarthe.com/exposure-berlin/
Does someone know what I can do to solve this issue?

Thank you, I hope you are all doing well.

[arminunruh]

make sure you haven't checked lay options -> cover options -> "disable for phone"