On question 3 (5423 see bellow we wrote) the prohibition applies to kehillos that accepted the custom. I am not aware currently of any kehilla that practices this custom?
A. On question 5423 we also wrote: -"Q. Kvodo Shlit’a. I overheard in a shiur on line something truly strange, that women should not do work during the nights of Sefirat Haomer. Is that really true? How come I have not seen anyone even the most frum families keeping this prohibition?
A. Indeed Shulchan Aruch (493: 4) writes that women have the tradition not to do any “Melacha” or work from Pesach until Shemini Atzeres from the sunset onward.
Mishna Berura (ibid. 18) adds as other Poskim also agree, that the above also includes men.”
In reality, as we also clearly mentioned, it is a tradition that is not usually kept.”