You've been invited to review a project but when you go to log in, you cannot find the project that you've been invited to.
The email address that the Project Owner invited you with does not match the email address that you signed up to Bonfire with.
This happens frequently in organizations that use different domains for their email address. For example, firstname.lastname@example.org may be an email address that you signed up with but email@example.com was the one that was invited. While emailing both would resolve to the same email inbox, one is not the other in Bonfire.
NOTE: The above domains are used for example and will not resolve to an actual domain.
The recommended resolution is to reach out to the Project Owner and have them invite the email address that you initially signed up with to review the account.
Alternatively, though not recommended, you could create an account with the email address that was invited. This can lead to confusion as all of your info and projects that you have evaluated will be split between two accounts.