I am also struggling to find the 4th Bedroom on the floor plan.
Tbh the photos are not great. Particularly of the bedrooms and the floor plan is pretty useless if it is not to scale. The garden also looks very sad, although most buyers would see through that.
However, your comment about the ex husband rang a little alarm bell for me. Is he doing the viewings?
Years ago we were trying to sell my parents house (probate) and couldn’t understand why keen viewers were rejecting it. It turned out that my DB who was living there and conducting the viewings, was giving each viewer a long sob story about how my wicked sister was trying to sell and evict him from what had always been his childhood home. This story accompanied by copious tears was coming from a 45 year old who stood to inherit a large share of the proceeds but wanted to keep the whole lot.
Once we twigged, I insisted that all future viewings must be done by the agent when he was not at home. It sold within a fortnight.
If I was you I would be considering a decent Estate Agent, new photos snd accompanied viewings.