Hello there,
I have the same car: Crossland X, 1,2 Direct Injection Turbo 81 kw (110 PS) Start/Stop, manufacture date: 12.2019 and mileage: 43,3 K
As I understood when I tried resolve the same problem: it is misfiring in one cylinder because something wrong with fuel ramp pressure and ECU protect catalytic because unburned fuel goes to the catalyst and can burn inside it.
That's why the fan runs on high revs, ECU is cooling down catalyst.
In my case Issue resolved by updating ECU firmware and as I can see, it completely changed ECU work logic and how it works with fuel high pressure pump
I've collected data via ELM327 adapter
I hope You also will resolve it