So I’ve noticed it’s way too common for people to complain about them loosing all their units, this is a very known issue and is usually due to a certain steam service going down. Time and time again people have submitted the same bug report complaining that they lost all thier units only for a few hours later for thier units to go back again.
My suggestion is to wait a day or two, check on the discord chat to hear if there is any steam issues and if you continue to have no units then make a bug report.
Sorry for being salty, hopefully one of the devs will make an official post of this at some point.