Board malfunction for twinkle lights

Hello all, I have some twinkle lights that has a USB plug-in that has a button to turn it on. Once it is on, it has a remote you can change the colors and set a timer to how long it will stay on.

Recently, it stopped working and I had to press the button again manually to turn the lights back on so I decided to change the timer to stay on 24 hours. That actually worked and they stayed on for weeks but I had to turn them off while I was out out town and now they don’t turn on at all.

I assume the issue is maybe with the timer chip, whatever one that is, because they would stay on if I kept them on but if the timer on the remote was set, it couldn’t turn back on.

It won’t let me upload a photo, is there a way to do that? I don’t know what I’m looking at and I hate the idea of untangling all of the twinkle lights so I thought this would be an interesting hobby to learn more about this sorta thing. Any advice would be very useful. I thank you all for your time!