HelloFresh Senior Software Engoneer interview questions

Contacted via a recruiter on LinkedIn and took an hour introduction call. She wanted me to take a technical test to move on to the next round. They use the HackerRank platform and although the three questions were rather easy, one question was working with a file and the directions were very vague on how to access the file within HackerRank's environment. The platform rendered my code as a fail although my code produced the expected results locally. I was told I would not be moving on to the next round although sending the code samples to the recruiter.