The Church never, ever, ever, has or will condone the worship of Mary!!
The Church venerates and encourages devotion to Jesus' Mother (Our Lady), but never worship.
I believe this is what your pastor implied in his response.
The Church may approve a particular apparition, like Fatima or Lourdes,
however it does not bind us to accept it.
This is because Marian apparitions are private
revelations and Catholics don't have to believe private revelations.
We are only bound to believe public revelation which ceased around the year 100 A.D.
John C. DiMascio