C:\Users\YourUseName\AppData\Roaming\RenPy\SummertimeSaga <- That's one of the two save folders
H:\Downloads\Mega\SummertimeSaga-0-20-1-pc_compressed\SummertimeSaga-0-20-1-pc compressed\game\saves <- The other save folder
To make a save load you need to replace it in both. Might work just to replace it in Roaming/Renpy but it's safer to just replace it in both.
You need to progress Debbie (Mom) storyline far enough so that Tony's pizzeria is opened. So you can't start straight from a new game, you require some main story progression first.
Well then >.< Still, it's better than nothing
Any idea why it was removed in the first place?