Soaked passenger footwells front and rear

Howdy ! Octavia mk3 vrs estate w sunroof

2nd day in a row (very heavy rain last night) Found this mess 2 days ago.

Rug doctor sucked most of it up,wetter in the back.

Thought it would be all dried out today when I went to put the mats back in.

Even worse!

Things I’ve done the other day -

Poured boiling water n fairy down the small sunroof holes,a curtain wire down both too,

Removed the glove box and pollen filter is bone dry

Lifted the scuttle panel on the windscreen passenger side,poked where the sunroof channel ends inside scuttle panel,no debris I can see.

Antifreeze level a bit low but normal.

Heavy heavy rain last night, didn’t drive the car for days so it’s a coming from upstairs issue.

Now parked up on the kerb with both psssenger wheels on kerb.

Another 3 full Rug Doctor wet vac containers of water sucked up again today.

Any thoughts please ?

Thank you