Hi ​@ccho25, 

Welcome to Box Community, and we’d love to further assist! 

If you happen to encounter the error, “Oops! We can't seem to find the page you're looking for.” while trying to access a shared folder. Please check the following: 

1. Confirm which email the invitation is being sent to.

2. Check which email address your Box account is associated to. To do so, go to your Box account, click on your name on the top right hand side, then navigate to "Account Settings."

3. Make sure the email address the invitation was sent to matches the email in your account settings.

4. If they do not match, have the invitation sent to the email associated with the Box account.

Note: Please ensure that all collaborations are sent to your primary Box email address and not to your secondary email address if you have one tied to your account. This can also cause the issue above to occur.

For more details, please see this article. 

Thanks for posting!