What's the error when you hover over the red squiggly?
Thinking it might be the red squiggly under filter 8. Did you copy/paste this in? If so always best to wait for Marketo to show the campaign name in that filter then select. If the naming of the campaign is correct, I would delete the last character, wait until Marketo shows it as a selectable option, click it and you should be good.
Good place to start anyway.
Let me know if that helped.
As David mentioned, check and make sure the Salesforce Campaign is input exactly as it is named in SFDC. Also make sure you have the the SFDC campaign synced to Marketo. There should be a little checkbox in the SFDC campaign. The sync can sometimes take a little time.
The red squiggly line means something is inaccurate and must be changed.
This should do the trick!