This TV movie and The Christmas Spirit - Weihnachtlich verliebt (2023) share the same location (downtown) just under different names. They were even shot in almost the same period of time. It's not a coincidence as both TV movies were co-produced by Reel One Entertainment and Champlain Media.
The cast in the movie use Swiftygram social network to post photos and it's not even the parody of Instagram. It's literally Instagram with just a changed first part of name.