1st pic: We are implementing a new sweep function in the next release (Shapr3D 3.0). Sweep will work much better, and you won’t experience this anymore. Only a few more weeks left.
To fix this: I would need to see the the actual spine you used for this sweep to answer your question. Just by looking at the end result, there’s not much I can say on how to fix it.
2nd pic: I have a few questions to better understand the issue. Are you sure you rotated the sketch 180 degrees? Did you try mirroring it instead of rotating? It could be a bug for sure, but can’t tell only from the picture.