Thank you.
If you have a contact at the Sen2Cor development team. Maybe you could also ask them about the following issues:
- Where to report Sen2Cor bugs - DEM not used if part can not be found
- Sen2cor fails on first attempt but works on second attempt
I’m pretty sure the first one is a bug that will not use a DEM at all in coastal regions.
The second one is just annoying that Sen2Cor fails a few times and then runs like nothing is wrong.