InnoGames interview questions

I participated in a job interview for content creation. The interview was very pleasant. However, I found it strange that they asked for two sample videos in the process. The normal thing would be to ask you for a work portfolio. Anyway, I submitted the videos with their respective watermarks, and to my unpleasant surprise, they never responded to anything about the process. A few months later, I noticed that they have republished a job offer looking for content creators exactly identical to the previous one. I can suspect that what they do is call people for supposed job offers to simply collect content fraudulently. Be very careful with this company, and always send all test work with watermarks and maintaining all necessary precautions. They don't seem to be really serious or professional.