I have noticed this is occuring more and more. It is a problem that started to crop up on reddit but now I’m seeing here more often. Do you not want other people to benefit from the answers you received? This community is kind of pointless if you just get an answer and wipe it from the web.
I had something similar in the past.
My solution was to report my own post and ask the mod to lock the replies which they thankfully did.
No idea why there isnt a way for me to do it to my own post though.