According to Freshdesk documentation, i can retrieve older tickets through the API using the updated_since parameter in the url query. My query have multiple parameters, and everyone is working besided adding updated_since. 

My query is: 

'https://buk.freshdesk.com/api/v2/search/tickets?updated_since=2019-01-01T01:00:00Z?query="(type:Incidente OR type:Problema)"&page={}'.format(page) 

(The format(page) is to paginate through pages). If i remove updated_since, the query works perfect but it only retrieve the last 30 days tickets.