B2C2 Senior Full Stack Developer interview questions

The interview process started with a meeting with the CTO. The CTO has forgotten about the meeting three consecutive times. The fourth time, he showed up really annoyed. The interview was short (15 minutes) where he explained mostly about B2C2. I didn't feel welcomed or appreciated, but I decided to continue due to high salary promise. The CTO asked me to finish the assignment. The assignment itself is strange, you have to build small application to consume B2C2 API. The strange part was a two hour limit to accessing the data, so you make your application based on -bad quality- swagger documentation, then you get access to data for two hours at a later set time. Five minutes before my set test, which was approved by them, I received a message from the recruiter telling me that the test was cancelled because they filled the position.