In the Waiting Room it reads the meeting will start at 3:30pm when it was scheduled for 2:30. The time displayed in the waiting room is always an hour after the scheduled time.
Someone may have put custom text in your waiting room for a specific meeting . Go to Settings, under Meeting Tab -> Security (this is the default view that comes up) you'll see a section for "Waiting Room Options". Click on "Customize Waiting Room" and you can then edit the text.