So I'm scouting what to play tomorrow (Sat.) online in the Weekly Events Schedule.
Click on PE - RTR Sealed and what pops up? Standard event info.
Hmm... must be a one-time thing...
Click on ISD Block Sealed and what pops up? Modern event info.
I'm looking into this problem and hopefully it can be avoided in the future. When you click on the calendar links, it should bring you to the Events Page with a list of potential events on the lefthand side. Were those links bringing up the wrong information as well?
In other words, if you clicked "PE - RTR Sealed" on the calendar and you got the Standard event info instead, you should've still been able to click "PE - RTR Sealed" in the lefhand list to show the proper event information.