Lebanon's new president's comments come after the UN chief called on Israel to end its 'occupation' of southern Lebanon.
Patients eagerly await the reopening of the Rafah crossing to get the critical medical care they need to survive.
The move potentially clears way for truce - scheduled to start at 06:30 GMT on Sunday - to begin after hours-long delay.
The ban follows months of legal battles and heightened scrutiny over the popular app's Chinese ownership.