Just had a chat with a Pearson Vue customer service agent.It ended up that if i'm a no-English native speaker but i live in a English speaking country i'm not allowed for the extra 30 minutes:
"Thanks again for waiting, unfortunately since English is an official language in Ireland, you will not be able to receive this extra 30 minutes. I am sorry for this."
Online resources seems a little bit confusing:
https://learningnetwork.cisco.com/message/7101#7101https://learningnetwork.cisco.com/message/428032#428032
Should i consider call the exam center and make an explicit request?