According to experiences on weightweenies, park tool self adhesive patches on a cleaned surface are bulletproof for TPU
I've been ruining my initial TPU's (way too expensive Schwalbe...) with these patches.
Be careful NOT to use the sandpaper as mentioned in the manual.
That ParkTool doesn't point this out does not speak for this company.
Now I'm just using the repair kit from RideNow that has the glue and standart TPU pieces. The included alcohol wipes are also not too good and I switched over to tissue and alcohol which makes lasting patches possible.