Don’t worry – it doesn’t look too bad!
In this situation I would first remove as much cardboard as possible by heating it with the iron and scraping it off carefully with a knife, a little bit at a time (or peel it all off when it is hot if it will come off in one piece, but I think it won’t). Then reheat the folded/wrinkled area to release the weld and flatten it out while it is hot, pressing it flat to re-weld it as best as possible. The TPU will probably be damaged so it might not be airtight where the first weld was released, so apply Aquasure to the inside of this area under the seam strip. (Remember, if you spread the Aquasure beyond the edge of the seam on the inside of the tube it will darken the red fabric, so avoid this if possible.) Then apply more Aquasure to the outside, where the cardboard was and anywhere else that the TPU looks damaged. That should make it airtight.
Do not try to remove the whole seam strip – that will damage the TPU and it will not go back on very well; try to only release it where it is folded. Use the tip of your iron so you can be more precise.
Sorry I can’t help you with the panel on your house 😀