Hey, thanks for trying out our game!
The piano bug should be fixed in the latest build (I accidentally left up an old build earlier which still had that bug). For the TV remote, the batteries just need to be in your inventory to use it (although combining items would’ve been a nice addition but was unfortunately scrapped).
Jumelles was our second year production project for AIE, and we don’t currently have plans to continue working on the game aside from 1 last update I’m working on to polish off a few things we didn’t have time to finish.
Thank you for the feedback, it means a lot to us and I’m glad you enjoyed the game!