Fingerprint on the Day of the Interview Didn't Work. Any Similar Cases?

On the day of my interview, the system failed to capture my fingerprint and take a photograph. The AO tried a couple of times, but the system was slow and failed. The AO said that they will schedule an appointment for me to do fingerprint and photo after the interview at the same Asylum Office. This happened 2 months ago, yet, to date, no one has called me back and did not receive any notice to do that.
My question, anyone has ever got in this situation before, and what I should do?
 
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