I can’t find a job that I applied for in my active applications

The difference between active applications, invitations and closed applications.

Your active applications show jobs that you have applied for that are still open by the employer and accepting applications. 

If an employer has closed a job, it means they are no longer accepting applications and you can see closed jobs that you have applied for by clicking the closed tab.

Your invitations are any jobs that you have been invited to apply for by the employer as you matched quite highly with the role.