[x McLovin x]

I've already been playing OOTP 26 but when I opened the game today, it made me enter my license key again and when I did, I received an "Activation Error" which reads as follows (also attached a screenshot of what I'm seeing):

"Failed to validate request because the time between server and client is not synchronized. The difference in time is 242627 seconds but the maximum allowed is 10800 seconds."

What does this mean and why am I getting this error? It keeps happening even if I exit and re-open the game so I cannot play the game now. Can someone please assist?