My causes are now returning 404 errors. I have recreated the page from one that was provided in the demo, they are published, but each time there is a 404 error. Here's the link to the recreated cause as well: https://www.interfaithpride.org/causes/donate-2/
did you changed the permalink structure recently ?
As you can see, no other page can be opened except homepage...
We added a SSL certificate to make the site secure, but no other changes have been made to the structure.
It was a permalink problem, but is fixed now.