V2.31.4 was the final major release, later patched to V2.33 to fix quality issues.
If your budget allows, consider upgrading to the Modicon M221 PLC, which is the direct hardware replacement for the Twido line. twidosuite v2.31.4 with crack 33
If you're interested in using Twidosuite or similar software, consider the following options: V2.31.4 was the final major release