ATM unlocking pin does not work


Hello, I am in the UK and after locking my card (forgot that my pin code was not the same as my app code) I went to an ATM with ublocking pin option as advised in the FAQ.
I went to severals bank with unloking pin option and it still does not work. The ATM tells me to contact my provider.

Could you please help me unlocking it ? I love visizing ATM’s but being in the countryside maked it quite an adventure.
Thanks a lot for your help !