Why cant I mark my advice as anonymous?

I was going through and marking some of my advice as anonymous that were the same and I got to the last question and it wont work.I've tried and tried...it just wont...do I try later or what?

What? You tried deleting your own advice?

Once you posted an answer or a question you cannot delete it...but you can mark it as anonymous...Only admin or an advisor can delete a question or an answer

thats what I meant..noticed I put I know thats not the right word b/c I wasn for sure how to spell anonymous, thats why I put delete in quotations...b/c I know that wasn the right word...thats why I also put but ya get it what I mean after I know thats not the right word...I know you cant delete it...but anyways it wont let me, I wanting to get rid of it b/c it was over a sub. that I just want to get off my profile or whatever, it let me mark the others but not this one...how can I get it to be marked anonymous like the others...now ya get what im trying to say??? lol sorry but I wasn for sure how to spell anonymous and I didnt want to attempt it lol

There you go, I fixed your title/question for you.
I'm not sure why it wont, maybe theres a bug or something.

lol thanks stephanief987, I dont know either oh well lol