You might want to ask in the Discord and see what one of the mods say. I see that fire-born said you had a little over 10 SPT, but you say you have 4. Just thinking out loud, but if you have some up for sale, the Splinterlands airdrop page says this:
Please note that DEC or other game tokens listed for sale on external bid/ask markets (not liquidity pools) such as Steem Engine, Hive Engine, and TronTrade will not be eligible for the airdrop rewards.
I wonder about the spelling when you delegated, everyone uses lower-case, but you didn't in this post (it may not matter, just thinking). With only 4 SPT, I also wonder if there's a minimum number needed? But that's about all I can think of. Head on over to the Splinterlands Discord, and maybe they can help you more. Good luck!
Sooo now the discord rep AND the support rep are telling me that delegated SPT shouldn't count for the airdrop. I may have uncovered a bug that's going to make monster-curator and a lot of players upset... heh. :D