You will need to define the following env values
## Blockchain
REACT_APP_BLOCKCHAIN_NFT_ADDRESS=0x62550B2b4fA9BB716CC65094DbdC7cb5DfAc1F8B
## API
REACT_APP_API_URL=https://genlayer-api-856f32d99092.herokuapp.com/api/
REACT_APP_API_TOKEN=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYW1lIjoiU3RlbGxhIEx1bmEgRGV2IiwiaWF0IjoxNzIzNzYxNDkzfQ._TR-X7G8uRfSd0iX5EBbMTdNiA2LAZgxLjhuwCW4HTI
To start a local instance execute:
npm run start:local
You can try and review a live web demo at https://genlayer-web.web.app/
(Remember, I'm not a UI designer :-))