poka neyasno, chto moglo potentialno vizvat izmeneniya

[Adil]

Poka neyasno, chto moglo (OR moglo yavitsa prichinoy) potentialno vizvat izmeneniya

Mojno tak?: It's not clear yet what might have potentially caused changes OR It's not clear yet what caused changes

Spasibo.

[summertime knives]

might have potentially caused - нельзя
what could cause changes -можно (если Вы уверены в слове changes )
+ it is not yet clear
+the (potential) cause of the changes is not yet clear