Read the Readme.txt file in the Crack folder.
Version 12.20 was installed and successfully cracked on May 14, 1998 and 12.80 on on Windows 10 64-bit edition.
Download TSplus Advanced Security Ultimate 7.3.4.30
Download TSPlus Enterprise 12.80.6.12 Fixed
Download TSplus Enterprise Edition 11.60.11.10 Multilingual
Download TSplus Enterprise Edition 12.20.4.27