If you entered the job address into your GPS or phone and can't seem to find your job, the first step is to check the job description in the app for any special instructions. Sometimes the job description will provide some extra instructions on where to meet for a job to check-in.
If this doesn't answer your question, the next step is to call your supervisor. When jobs are posted, it is required that a company provide a supervisor phone number. You can access this number via the app. Please give the supervisor a call to let them know that you are lost and need help finding the location.