after whatsapp update the _1EFSv class was not valid anymore for pinned icon. adapted the code to also use the data-icon class and check for pinned.
simplified the isMuted check by removing the not needed parentElement.parentElement tree upwards search
after whatsapp update the _1EFSv class was not valid anymore for pinned icon. adapted the code to also use the data-icon class and check for pinned. simplified the isMuted check by removing the not needed parentElement.parentElement tree upwards search