Unfortunately, as of recent, you no longer have the ability to gauge the startup of someone's heavy. This has to do with a recent update to their software which does not allow you to see their startup anymore.
There are a few workarounds if you are looking to see the startup of somebody's heavy. Firstly, if you are visiting their web page, you can search the terms "startup" and "heavy" in the search box on the page to find results. This should give you the information you are looking for.
Secondly, if you know a friend who also uses their software, you can ask them to provide you with the details you need. They should be able to provide it to you if they know the software.
Finally, if you don't have access to either of these two options, you can use specialized web search tools like Google and Bing to look for the details that you need. Again, by searching "startup" and "heavy" you should be able to find the necessary information.
I hope this information was helpful. If you have any further questions, please do not hesitate to ask.