What can I do about this?

A friend was going to create a costume made avatar for me, but seems she had problems with it since unity wont let her upload em, it was a free thing for me to get from her.
So my question is how/where can I find those that can make avatars relatively for a cheap price?

  1. there might be broken scripts on the avatar in unity

2.there might be 2 or more avatar descriptors on the avatars

3.there might be a script in the project that is breaking the vrcsdk

if that doesnt work just tell me