Sorry not my car but firstly to point out this is a Seat Leon (and i think its a MK3) so these instructions may not help you at all.
select Control unit: 01 Engine
Then select live data
Then from the very long list select
Particulate filter, est. blocking the reg. field
Particle filter, req. of the reg. field
Particle filter, kilometers from the last reg.
Particulate filter, oil ash mass
Particle filter, calculated soot mass
Particle filter, measured soot mass
Particle filter, time since the last regeneration