404 error when clicking on invoice link

I have invoices and client portal active. I also have the free woo sync extension running. I made a test invoice, but when I click on the “view invoice” button in the email, it goes to a 404 page not found. I have a client portal page established and “easy links” checked so unlogged in clients can view their invoices. Help? Thanks!

The page I need help with: [log in to see the link]