The "ID Does not match" error means that the number of, or serial numbers/ID's of the MicroInverters on the Web Portal is not identical to those known by the DTU. If you have an installer account for your power station you can click on the "Networking" icon inside the "more" icon on the extreme right of your "list of stations" page to send the list from the web portal to the DTU. This assumes that the web portal contains the "correct" quantity and ID numbers of the MicroInverters.
If you do not have solar operator/installer account then your solar operator/installer should be able to easily solve this "ID does not match problem" for you.