Run exe file and wait until it exits

I have tried multiple versions of code found by my friend Mr Google to do this. They all run the program but none of them wait until it is closed. They work with notepad.exe though. Any ideas as to why this might be and how I can make VB6 wait?

autoleveller-0.8.7.exe https://www.autoleveller.co.uk/
Windows 10 64 bit