Avoid, avoid, avoid, avoid...
Thankfully I just migrated away from Nestify.io after a few years of using them. The first 2 were fine but the last 2 years have been miserable (I think they had a change of ownership but I'm not sure). Their customer support is shocking and they don't seem to have any technical expertise and always fail to sort the problem saying they have escalated the issue, at which point you won't hear anything again... I had the same server permission issue on the majority of my sites for months that no one could fix (prevented me from updating plugins, etc.). I was always told to just reset permissions from their cpanel which never worked (even when they tried). I can't explain how much stress they have caused me. They do offer slightly cheaper hosting so I guess you pay for what you get. I'm so happy to have finally migrated all my sites away from them. Do yourself a favour and avoid this company at all costs!