There is a problem with exporting the character.

I made my character in ZBrush. In Blender, using an addon (it creates a special skeleton based on the default skeleton in UE5), I added a skeleton to it. After that, I exported it to UE5. Everything is fine except the legs. They seem to be magnetized to each other. I must say right away, I’m not a programmer, and I don’t really understand UE5. The legs do not fit into each other, but are simply glued together. And I do not know what to do. Moreover, with another character model, everything is fine and the exports and animations work fine. If anyone has encountered the same problem or knows what needs to be done, please help, thank you in advance.