A sub of mine does not support cross-posting suddenly.

so i just recently created a news related sub and we allowed cross-posting. now though, that option is not there. not because we turned those permissions off, but because they just don't show up in the settings anymore. i've tried fixing this, going into the sub settings multiple times and it is showing that there isn't an option to, it's just greyed out and no option to change it. How can I get this feature fixed so that I and users of the sub can continue to cross-post ?

Please help.