If the print is incorrectly rotated this is usually caused by the wrong format size within the printer or settings regarding the rotation within the printer driver.
Shoppa has no print options regarding rotation so changes need to be made within the printer driver.
When printing large format signs there is usually a setting for “Auto-rotate” which will try to place the sign correctly on the paper. Verify that the driver has this feature enabled.
If the issue remains, please verify that the format in the printer has the same dimensions as the Shoppa client. You can see the format dimensions by clicking the information icon next to the format and then compare that to the format within the printer.