So apparently I made an oopsie where it comes to the saves folder. There were a bunch of things I was fixing up right at the end there and, unfortunately, this kinda wound up slipping through the cracks.
Basically, for both Free versions and Intern versions, saves are now located in the "Employee" folder instead (basically I copied over the options file and that's where the save data location was stored, so...)
Anyway, I'll likely keep it as is, BUT given that this must be rather annoying to your save files, here's a potential fix:
Depending on which of these
Windows: %APPDATA\RenPy\ "SihaiDatingSim[FREE/INTERN]-1561917752"
Macintosh: $HOME/Library/RenPy/"SihaiDatingSim[FREE/INTERN]-1561917752"
Linux: $HOME/.renpy/"SihaiDatingSim[FREE/INTERN]-1561917752"
Find that folder and move its contents into the
"SihaiDatingSimR-1561917752" folder
Do that and I believe you should have all of your old saves back! I apologize for the inconvenience :X