The process includes a tech task (yet another REST API service, just about events), then a discussion about it. Quite common thing. Plus some questions like "do you love parties".
After that I've got an e-contract, but asked if it is possible to get a paper one - because e-contract was not even signed by anyone - just a pdf file. They said it was fine to them, but it was not fine to me)
When I asked for a printed one, they answered that they decided to withdraw the offer because I did not trust them. After this I wouldn't trust em for sure)
I've never had such experience before. And such behavior should be stored here to aware people.