Q. In our critical times, (Pesach 2020), when we are all davening at home without a minyan, do we say hallel the first and second night of Pesach after maariv?
A. Shulchan Aruch (487: 4) quotes two opinions whether we recite hallel after maariv in shul the first and second night of Pesach. Sefaradim and Chasidim usually do and with a brocho. (See Mishna Berura ibid. 16, Kaf Hachaim ibid 45, and Igrois Moshe O.H 2: 94, that this was also the minhag of the Gaon).
Horav Shlomo Miller's Shlit'a opinion is that for those who maintain the minhag to recite hallel in shul, when at home and without a minyan, it is preferable to recite it without a brocho, due to the different opinions involved.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit'a.