Some Jews live in far away, small towns, without a Jewish community and can't get matza for Pesach this year due to shortage (not enough boxes were brought to the city) and crisis on the transportation system that won't allow trucks or postal services get to their city in time for the first Seder. What should they do?

It's hard to believe that the local Chabad can't provide for you, or that no shipping service can send to you. If not, do what our brothers in the Soviet Union and in the ghettos in Poland did, simply bake the matzot yourself (it's not all that complicated!).