Starbucks very berry hibiscus drink

Is the very berry hibiscus drink from Starbucks kosher?

Contains grape juice which we have not yet be able to verify whether its Kosher. Sorry.

How about the strawberry lemonade açaí without pieces of strawberries? Just the refresher with the lemonade ?

Contains grape juice which is a problem

The grape juice is for the very berry hibiscus . But does the strawberry icai contains also grape juice ? Please clarify ? Thank you in advance