ICS Calendar not linking to Google Cal

I have Google Apps for the business that is opening and I installed ICS to link the Google Cal to the website in month format, giving the cal its own page (will also add a sidebar widget later). I have the Google Calendar shared, made public, and installed the ICS plugin.

The calendar appears on the page but it is empty. I checked the events I added to the Google cal and they’re public (not that I think it matters, I’m pretty sure default is also public). In the ICS page, I linked Google’s HTML option (as opposed to their iCal or XML codes). The HTML was the only one that displayed any kind of calendar at all.

Any suggestions? I’ve spent all morning researching this and can’t find a similar problem or documentation that covers this.