Obviously we don't know the details of the agreement so we can't actually know much of anything. Presumably the government itself isn't buying the flowers so I'd assume its more of free trade kind of deal so no tariffs or lesser tariffs are imposed on Ecuadorean imports.

The removal of the agreement wouldn't then be embargo/sanctions, it would mean normally trade that other countries conduct with the US. So the price for US importers would increase and so at the margin as you rightly point out there would be some loss of profit and some loss of sales. We don't know how much though, and we don't know if those could be replaced by other purchasers and if so at at what price reduction.

In any event it wouldn't be a loss of $23m a realistic estimate might be closer to 10% of that so around $2-3m. For a country with $5bn in oil exports that's chump change and given that its a leftist government any local workers that suffer will probably be have a decent social safety net in place until they get back on their feet.