The grey picture beside the teachers' names is typically an indicator that the teacher has not uploaded a profile picture to their account. This can happen if the teacher hasn't set up their profile yet or if they haven't chosen to include a picture. To confirm this, you can click on the grey picture or hover over it to see if any additional information or options are displayed. Alternatively, you can also check the website or platform's help section or contact the support team for further information on what the grey picture represents in that specific context.
