Elmhurst Illinois board member can't post resignation

I have been on a condo association for 15 years. Last 5 as the President. We recently got 3 new board members and a new manager. I resigned because they ignore all my advice with the knowledge I have.

I asked the VP of the management company if I could post a note thanking all the Unit owners for their support and that I was resigning and she told me Its not a good idea. I said ok, but after thinking about her answer, I wondered why not? It was my idea to resign. I do not get along with the Manager and until 6 mos ago when she came on I worked well with the others.

So I decided that the nicely worded resignation letter to all the Unit owners I was going to post anyway. Well lo and behold it was taken down. So confronted 2 members and they had no idea what happened. So I posted 2 more and again the were removed. I have large owner support so I think they are afraid that the management will be swamped with calls asking why I resigned.  Can I put a nicely worded resignation letter up? Again I did not insult any board members or management.