I updated one of my domains nameservers to point to my new server. After a few hours it updated and was working on the new server. Now i've just woken up to see the domain has reverted back to the original server it was directed at. I checked the nameservers of the domain and they are still set to the new ones I set. Not sure whats going on or how to fix this issue? Thanks for your time.
Talk to you web hosting company, it may be a DNS problem on their side if the nameservers are okay on the domain registration side
It may also fix itself, the old nameserver may still be cached somewhere, it can take 48 hours to stabilize.