Possibly. Navigate to Documents/My Games/SnowRunner/Base/Storage . Delete the user_profile.dat and let the game rebuild it. However, if the unlocker overwrote your Steam ID, the save is permanently lost. This is why you must always backup your saves before experimenting.
SnowRunner uses a combination of Steam DRM and custom anti-tamper measures. While not as aggressive as Denuv o in AAA titles, Saber Interactive has patched the "easy" unlocker exploits repeatedly. Many unlockers you download from YouTube descriptions or sketchy forums are outdated. They will either do nothing, or worse, they will crash your game upon loading a save file. snowrunner dlc unlocker
Summary