Can you please elaborate where you want to change the picture and affiliation? Is it on Researchgate (RG), or in a publication with a particular journal, or a book?
This is important, because the way it needs to be done may be different for different scenarios.
I do not know this person . I am interventional cardiologist and associate professor of university of ahvaz iran . I did not any paper with him as co author. Thank you
You need to contact the editorial team. They have the option for the same. At times you need to give an undertaking and specify the reason for the same. If you need to just change it here at Researchgate, then you will have to submit the request in the edit section of the articl.