Seems there’s 3 possibilities I have read about.
Poor sealing of windscreen where the windscreen needs to be taken out and reinstalled.
A metallic sticker that’s supposed to seal an opening around the A pillar coming loose and letting water in.
Damage to the door seal where the water can run inside the seal further around near the floor and let the water in.
Suggest a hose and torch and get a friend to give it a good soak.