The Isis Adventure

Just been checking the Copernisis clubs 32 members in the 5% club and 4 in the 1% club. So there are people out there saying it's not a good puzzle so where is everyone else??????????? Must be harder than we think then.

Easy? No
Opened? Yes
5%club? Pending
1%club? Possible

If I had nay idea how to open the secret compartment I could at least attempt to join the 1% club. I can't seem to make any progress.