Last night I was trying to do some DX fills and get my 40m LoTW confirmed up to 100.
I heard CE3FZ on 40m working the WAE contest and saw I had him LoTW confirmed on another band so I decided to work him.
I could not get through and I thought maybe I was off whatever freq he was listening on and maybe he had a very narrow filter

so I tried and tried to call him...;
Then today it dawned on me that while I had looked up the exchange for the WAE contest I hadn't done my duty and learned what the gist of the contest was. Worked All Europe, duh. Contacts MUST be between European and non-European hams.

I feel stupid of course, and am sorry for my QRM. Only good thing is I am probably pretty week with my 100 watts and G5RV.
My take-away lesson is that if I am going to dive into contests to work DX, I need to do the minimum homework of finding out what the contest actually is and not merely what the exchange I should send is. last night, I was definitely not the brightest bulb in the house!