New Engen interview questions

The first few steps of my interview process with New Engen/Donut Studios went perfectly well, until I made it to the 3rd or 4th round—the next step was going to be a take-home assessment but I was told that they had to temporarily pause on interviewing to address a company-wide backlog of work and internal planning, and they'd be in touch within a month or two to resume. When they finally did reach back out to resume, I replied immediately confirming I was still interested in the job and to send over the assessment. They then NEVER got back to me, no matter how many times and different methods I tried—I emailed my HR point person several times and messaged them directly a few times on Linkedin, I emailed their general inquiry inbox, messaged their LinkedIn page, nothing. Incredibly frustrating experience to have to pause the process, be told it's resuming, and then get ghosted immediately after, and beyond unprofessional on their end.