This feature helps user diagnose if 'User Photo' is having sync issues.
Enter the user principle name. Click 'Check Issues'.
In this example, the user's photo in AAD and SPO is mismatch. But it cannot be recognized by tool and it shows the remedy steps.
"Photos are loaded, but if they are mismatched, please follow this article" https://github.com/abrcheng/SharePointOnlineQuickAssist/tree/main/KBs/UAP/SyncPhotoFromADToSPO