Thank you for your response.

All what bike store told me was that on the crank had dent on it so they had to replace the crank.
They said display stand spot had one wheel guide that doesn't grab the tire size properly (I don't understand what this means) and that might have caused the crank to dent.

Could you help me what I need to ask to get more details?
I don't understand what they say sine I know nothing about bike so I don't know what to ask.

thank you