Machina Labs interview questions

Lengthy interview process with recruiter calls, phone screen with CEO, take home test, project review interview and finally full day on site with multiple team members and CEO. Process went well, feedback was super positive. However, when they gave an offer they low balled me ( offer was much below the advertised range on their website). When trying to negotiate, they rescinded the offer. Seems like they are lacking in integrity and transparency. Didn't seem like they were ever going to pay the range that was advertised from my final conversation with the recruiter. A very disappointing experience after a lot of time and effort. I would either stay away OR set salary and benefits expectations very clear from the start