Alright so the nails thing i didn't notice I had insufficient gold which is why it looked like it was out of stock mb but the joyce stage 1 is on weekends in my game My game is v0.3.0 and I believe this is the latest one so I don't know why mine's different. 
Viewing post in Daily Lives of My Countryside comments
You need the v0.3.0.1 bugfix version:
Bug Fixes:
- Corrected the issue where Callum's hand was missing while helping Daisy with the cow
- Fixed a visual bug during the toy testing scene with Callum in the Dream Room
- Resolved the black screen issue during the Outdoor Class and River Picnic
- Addressed the problem where a sprite remained visible during Joyce's first dinner
- Corrected the mislabeling of Lily and Lucy’s names
- Fixed a visual issue with Ava’s face in the Dream Room
- Unblocked Joyce's first visit which was previously hindered by Anna's schedule