How to remove ADD POST button on Composer

Hi there... I'm back using EasyBlog on my site again after a year or two absence

I'm trying to hide the blue 'Add Post' button (see screenshot 1)on the Composer because I don't want my users to be able to do that.... I've tried to disable it in 'Blocks' back-end (screenshot 2) but it doesn't seem to have any effect....

Have I done anything wrong? or should this disabling back-end remove it? (if so, maybe it's a temporary cache thing?)

Thanks!