@rafanaldo7, You should include the screenshot of your conversation with their email support in the main post. You may also include the deposit email notifications as "proof of payment". Winz.io sends email notifications on each deposit. Anyway, I just checked your complaint on Casino Guru. Winz.io representative has replied there yesterday. Judging from their statement, you aren't going to receive the winnings from them, no matter what step you take now. They have already refunded your deposits. Winz.io representative has mentioned this clause of their terms:
2. CHANGES TO TERMS AND CONDITIONS
The Casino reserves the right to unilaterally change these Terms and Conditions when such need occurs. We will do our best to notify our players of any significant changes by email. However, we do recommend all players to revisit this page regularly and check for possible changes.
Have you received any email from them in the recent months about the change of their terms? Winz.io team is partially responsible for this inconvenience if they haven't notified you about this before confiscating your profits.
There's also a possibility that the emails landed in the spam folders, and if they do not have an internal notification about any changes on their platform then OP could possibly miss it, this is a big trap for gamblers when they are changing their TOS and they do not have an internal inbox for notifications I don't have account on Winz.io so I'd like to ask OP or anyone with an account on Winz.io does the platform have an internal inbox.
Casinos should as much as possible employ a popup message or anything that players will not miss any messages, so they can communicate important updates about their platform, anyway the Casino Guru is examining the case, and I hope CG will favor OP if Winz.io does not employ the right tools to communicate with their players on important updates.