I was invited to attend a mandatory Q&A with the CEO (although they stressed that this was not the interview itself) Was harassed with increasingly passive aggressive emails and messages after not responding on a bank holiday. The messages also contained lots of spelling and grammar errors and a general lack of thought. The aggressive tone that came across in their communication with me was very off-putting and made it clear to me that I would not like to work at this company.

It was good, you have a good time prepping for the online questions interview. Just be sure about yourself and the answers you give. Dont worry too much! You've got this!