The issue is that spouses and children of LPRs (which is category F2A) are, by law, numerically limited (in contrast with immediate relatives of US citizens which do not have such limitations and can get visas/AOS at any time). For the past several years the dates were “current” for F2As meaning they could apply for visas or adjust status right away. Starting September 1, it is no longer the case for adjustment of status applications. Please see the post below, it might help clear it up further: