This FAQ topic is applicable for visitors who bought tickets via Paylogic, not for Global Journey visitors.
Usually, the personalization of the tickets is final. Exceptionally, we will re-open the personalization in the beginning of 2022 for the duration of 1 week. In case you would like to process a name change, this will be possible in the Main Buyer’s Tomorrowland account at that point. More info will be available in the beginning of 2022.