HelloFresh Technical Product Owner interview questions

Submitted my resume and cover letter online. Did not hear from them for about two weeks. Then received a request for an interview via video call. Did the interview with an HR representative. Interview seemed to go well. Was waiting for a followup interview with the hiring manager. It never came. A month later I received a 'regret' letter. The post is still listed on their job board so not sure what is happening there.