Question about Elzle Solar PowerBank

Why do you say that? It must work. Check your charger
There's a USB-C connector and that's all it does
Input(Type-C): 5V/2A, USB A1 and A2 Output 5V/2.1A
https://m.media-amazon.com/images...

However, you can use a USB -> USB-C cable to charge a peripheral.
But not USB-C to USB-C