Remember that Threads uses a circular crop. Keep your face or logo centered so important details aren't cut off when the app masks the edges.
A weak connection can prevent profile media from loading. Toggle your Wi-Fi off and on or switch to cellular data to refresh the connection. Pro Tips for Profile Optimization threads profile picture viewer fixed
For a long time, users couldn't easily expand profile photos. Recently, functionality has been improved across different platforms: Remember that Threads uses a circular crop