Creating loft problem

I’m quite new to Shapr and i’m still learning a lot, but I stared creating more complex shapes and using LOFT function. I acountered a problem that I’m fighting with for some time and I can’t see the problem. The main function works, and I created a guide but from one side (left on the drawing) it’s creating the loft how it should look, but on right side it looks like there is no guide rail. How should I do such loft (see attached screenshots)

Thanks in advance for help

What is important I think, the curve on the bottom is a complex shape and opens towards the right side