Yes, this configuration (spacedesk_driver_Win_10_64_v2101 and spacedeskWindowsVIEWER_v0943_BETA) can be used for free until it will expire. No matter if business or private use. Expiry date of free spacedesk versions is always shown in spacedesk Driver Console (December 2024 for this configuration).
In General:
Free spacedesk versions always have an expiry date. Paid business versions do not expire.
After the expiry date, spacedesk free versions will still work. However they will not show any colors on the screen any more. They will look like an ancient Black and White Television.