WL25BAEN6X
Came across this post on Ozbargin.
Full credit to Benzz1725 / https://www.ozbargain.com.au/node/581254
" Voucher code https://offer.tidal.com/voucher?code=WL25BAEN6X Must be from the usa to use this code, just use a vpn if you not from here.
Use your card you wont get charged until the trail ends, or you can use this bin 40606840xxxxxxxx and generate the cards via the website namso gen, zip code 10080.
The original poster used Hola VPN, but I used Tunnel Bear and my normal credit card (you can cancel the subscription straight away): https://my.tidal.com/us/account/subscription
You can also upgrade to the family plan for free, so you can add up to another 5 accounts (tested this myself and all working)
https://my.tidal.com/nz/family/overview
Very easy to sign up following the information provided, i used Nord VPN no trouble at all