If you are not seeing all of the classes in Seesaw, here are a few things to try.
1. Seesaw access is based on Skyward enrollment data. Please check with your teacher to verify that you are enrolled in the classes that are not showing up. If you are not enrolled in the classes, you should get access to them the day after they fix the enrollment.
If you are enrolled in the classes one of the next steps should resolve the issue.
2. From inside the Seesaw app, click your name in the top left and inside the Profile window click on "Sign Out" on the bottom left. Once you are signed out, Close the Seesaw and ClassLink apps. Go back into ClassLink and launch Seesaw. In most instances, this should refresh the class list and you should see the missing classes.

3. If you are still not seeing the classes, you can try removing the Seesaw app, then adding it back from Meraki. Once it has reinstalled, you can go to ClassLink and try logging in again. You should now see all the enrolled classes.
If after doing all these steps you are still not able to see all the classes please submit a support ticket. If you can provide details on what steps you have taken that will help expedite your request.