PLEASE work out if something is legit BEFORE installing it!
Assuming you downloaded it from the official website then yes you should be able to just put your mnemonic in and see your nft - potentially provided you did indeed send it to your Solana address.
You could look up your Solana address in a block explorer beforehand anyway to know if the nft is there or not.
Hi, I did it and the NFTs are there. I was relieved. Should I always uninstall the chrome extension when not in use? Thank you!