Regarding resignation acceptance email not received in t**

I am on notice period I dropped email to my manager on 25 Sept and week I got acknowledgement email but there they mentioned like this not your resignation acceptance email. Now only 1 months left for my LWD still not received resignation acceptance email. Any idea how many days form LWD they will give me resignation acceptance email.

Also in my project toxic work culture is there my manager time to time giving me threat like he will escalate about to higher project management what you did work he is saying he only working for the project whatere he did this only right. So will impact on my resignation?