Blocked transactions through major banks like Barclays are a fairly common occurrence for international gaming platforms. Bank security algorithms are often triggered by opaque or offshore merchants, resulting in time-consuming calls to customer support.
As for Ninewin, such projects typically encounter difficulties with direct transactions from UK debit cards due to strict AML (anti-money laundering) regulations at major banks.
If you're looking for a way to top up your balance on third-party platforms without constant blocking and calls to security, many users have now switched to using intermediate payment gateways or virtual cards.
For example, many in similar situations use Carteza. This service allows you to issue virtual cards that process through local UK and European acquirers, making it much safer than direct transfers to suspicious websites. This eliminates the main bank's paranoia
, since the transaction looks like a regular purchase in an online store, and not a risky payment to a gaming service.