Instructions on installing Zymkey 4i on Raspberry Pi 5

I am looking for how-to guide/instructions for installing Zymkey 4i on Raspberry Pi 5 running Debian 12 (Raspberry Pi OS). I followed the instructions here ZYMKEY4i: Security Module for Raspberry Pi - Hackster.io but ended up with a service that would not run properly.

Believe or not, it was some special characters in my proxy password that caused the issue. All is good. I am up and running.