hi guys, how are you all?

I'm new here, and I'm new to mixing, as well ..
I have a question for you : I own a U-Mix44 .. and I can't find my serial number ..
there's a sticker under the U-Mix with a number on it, but it doesn't seem to be the S/N, 'cause the forum asks me for a 29 character serial ..
help me please, thanx!