fix model in roblox

Looking for a freelancer with experience in fixing models in Roblox. The specific issue with the model is that it is not animating properly while walking, despite being rigged inside of Roblox. The model type is humanoid. The client has attempted to fix the issue themselves but has been unsuccessful. Ideal skills and experience for this job would include expertise in Roblox modeling and animation, as well as a strong understanding of rigging and collision detection.