It sounds like the rubber seal (glue that keeps the foam sheet stuck to the metal of the door) started leaking again. The exact same thing happened to me. I thought I'd fixed it properly the first time around (redone the rubber glue, duck tape, etc.). But a year later, it started leaking again... Read the below threads and you'll be able to fix it yourself. It will take you maximum 1.5-2 hours.
I tested it by pouring water on the window. That water then partly pours inside the door. The foam sheet should avoid the water going to the inside side of the door. Then, via the rubber door seal, is leaks inside. I couldn't believe it at first either... But having had to repair it twice, I'm pretty sure that this is your issue as well.