Hi,
I recently uploaded a bundle on Roblox. After testing it in Roblox studio, everything looked fine and I publish it. When the bundle pass moderation and was ready to put on sale, I noticed a gap between his foot and his lower leg (like the foot is separate from the bundle). I went back in studio and moved the attachment rig a bit and re-upload. The gap was smaller but still there. Each time I import the bundle from blender, I get this warning :
I only have to place the attachment rig at the position Roblox recommend, and it validates, but it still creates a gap after I publish the bundle. The bundle as absolutely no gap in studio, when I test it in the avatar setup and when I test it by playing in studio wearing the bundle. The gap only appears after I upload, and I don’t want to waste more robux 
. Could this have anything to do with the position of the bundle in blender?
Thanks for your help,
Dies_Solis