Finished 15 Tier S playlists in a Lamborghini - Murcielago not unlocking

After completing the challenge - Finish 15 Tier S playlists in a Lamborghini - Murcielago was unlocked in the Online, but not in the Story. Now I can buy this car in online mode, but in single mode they write to me that the car is not available. There is a nuance: after completing the challenge, I walked away from the computer for a long time, and the game itself disconnected from the network. Rebooting and reinstalling Unbound didn't help. At the same time, when passing the next challenges, the cars were unlocked in both modes and became available for purchase.

upd. EA support seemed absolutely useless. For now I have restored the previous save file. I will go through the challenges again. But the problem with the game remains. Developers, it's time to do some work!