Unfortunately, yes. Samsung pretty much never takes responsibility for third-party partners, big or small. 
There’s been quite a bit of discussion among customers in this forum about various alternatives, including the ones for Locks. That’s all unofficial, of course. If you’d like to see some of those you can start with the following:
Manage Rental Lock Codes And Home/Away after Groovy?
Or this one for a more general discussion to see what other people are doing.