RE: What would be the effects Warp Plates in STAAD analysis?

I appreciate the time spent to somehow answer my post. But technically, I don't see any response to my post. What I am looking is that the effects of this analysis in my design. Would there be such an acceptable tolerance granting that the error messages or the result be not that far from the "supposed to be right analysis". Flat plate elements, as it is named is surely be flat, now with some "warped" on it, how do we address that (granting that we have gone through going to the " View > Options > Tolerance > Tolerance for Warped Plate Element Detection" as suggested. About the model, would this mean that we cannot model plate or shells elements for a curved surface like the one in my previous post for a tunnel junction? Or perhaps an arch dam?
I stay attentive on the response to be given on this post.
Regards to All