Hello there,
Domain aomeisoftware.com and extend-partition.com doesn't have open information about their company. Usually, a company must provide clear information about their identity publicly to do fair business.
Aomei softwares downloaded link (hxxp://aomeisoftware.com/download/ddm/DDM_Pro.exe) flagged as Malicious by CRDF earlier, https://www.virustotal.com/en/url/a0c752cfb758a9d9bd2ce52d775642d3af7ba73b3a41d93c5007d436532fedd1/analysis/
Recommended to use Windows in-built Partition (Disk Management) tool unless require of third-party tools for advanced use.
It's up to you now, decide to use this tool.
#D09r