“Sync” your wallet
Go to objkt.com, click on “sync” at the right of the page.
You will then see that you are connected!
Please don’t forget to send some tezos to your wallet before starting. You need to have at least a small amount on tezos on your wallet to be able to reveal your address. I would recommend to send at least 1.2 tezos because you will need 1 tezos to create a collection and 0.2 will allow you to pay some gas fees.