The lectures are as follows:
The poster display panels that will be available for poster presentations at the Congress measure 1000 × 2000 mm, width by height (see image below), however not all of this area is available for your poster(s). The maximum size, as well as the recommended size/format, is therefore 900 × 1900 mm (width × height). Please consider using the recommended format, although you are free to choose any size up to the maximum size. But in any case your poster must adhere to portrait orientation.
prescribed poster orientation
poster display panels