Haven't played Wayhaven, but usually at the end of a book with a planned sequel, the game will ask you for an email. You should be able to transfer saves via email even on pirated copies.
If that doesn't work, then you can acces your save files and try a manual transfer from %AppData%>roaming>SmartSteamEmu The game files names are random numbers but if you enter the folder and then click on the file named "remote" you can find the game's name in the save files.
(you can also sort your folders by most recently changed if you just finished with book 2)
(the save name should be something like "storePSwayhavenbooktwoPSsave state")
Just transfer the files inside your book 3 save folder (if you don't have one you can create one by starting and playing the game)
Apparently it's working for others, but it's not working for me; I've tried downloading from all available links and they all just act like I'm playing the free demo.
If that doesn't work, then you can acces your save files and try a manual transfer from %AppData%>roaming>SmartSteamEmu
The game files names are random numbers but if you enter the folder and then click on the file named "remote" you can find the game's name in the save files.
(you can also sort your folders by most recently changed if you just finished with book 2)
(the save name should be something like "storePSwayhavenbooktwoPSsave state")
Just transfer the files inside your book 3 save folder (if you don't have one you can create one by starting and playing the game)