Create Nami Wallet at https://chrome.google.com/webstore/detail/nami/lpfcbjknijpeeillifnkikgncikgfhdo?hl=en-GB
Go to >> Setting >> Network >> Testnet
Go to https://testnet.sundaeswap.finance/#/swap >> Beta Guide >> Follow the step. It will give us the test token *But, It really slow toomuch. So, You can get Ada testnet token here https://testnets.cardano.org/en/testnets/cardano/tools/faucet/ (It will give 1000 Ada/time) Scroll down and it will have slot to fill Wallet (How to check address : Click on Nami wallet >> Receive >> Under Qrcode >> copy)
Try to Swap and add LP (1 Ada >> Mint)
Then give them the feedback on https://docs.google.com/forms/d/e/1FAIpQLSfJJiL8LV-wrAKfoDEQWVL5EEE9Or01HXhoE9fZHj60aSMzIA/viewform
See ya