Movistar (now part of Telefónica) is the premium sports broadcaster in Spain. Via Movistar Plus+, they hold exclusive rights to La Liga, a substantial portion of the UEFA Champions League, and, crucially, NBA games (often via NBA League Pass integration).
If you search for just acestream nba, you will find the American TNT feed or the generic NBA League Pass International feed. By adding "Movistar" and "Repack", you signal to the search engine (or forum filter) that you want: acestream+movistar+nba+liga+de+campeones+repack
In Spain and Latin America, Movistar Plus+ (formerly Movistar+) is the king of sports rights. They hold the exclusive pay-TV rights for: Movistar (now part of Telefónica) is the premium
However, these services are locked behind a high paywall (often €70-€100+/month) and require a Spanish IP address. This exclusivity creates the demand for "repacks." However, these services are locked behind a high