The US-Iran ceasefire has been extended. But were the warring states ever in agreement?

The US-Iran ceasefire has been extended, just as it was due to expire. US President Donald Trump says it will continue so Iran can submit their proposal for a ceasefire and talks can take place. But the US plans to continue its blockade of Iranian ports, an move that Iranian officials have maintained is an act of war and a violation of the ceasefire agreement. It's led to confusion over whether the ceasefire talks will happen.