Lansweeper scans installed Windows software from the registry of the local Windows computer and mimics Add/Remove Programs. I'd recommend checking whether Acronis Workstation is listed in the Add/Remove Programs list. If it's not, it will not be directly scannable via software scanning unfortunately.
If Acronis Workstation was installed for a specific user, this software will only be picked up if Lansweeper scans the computer while this user is logged on.
For more information on the Lansweeper software scanning procedure you can check out
this article.