TikTok Software Developer Internship interview questions

I have applied to multiple summer intern positions at Tiktok. Then, I was given an online assessment which i need to solve within five days. I have received multiple assessments for my each application. They don't give any update on assessment result. It is very disappointing.

I passed the first round coding interview, yet got my second interview cancelled right 1 day before the scheduled date because "business is changing rapidly and headcount has been fulfilled".