If someone introduced it to you, they are probably an insider on the scam or potentially even the person behind the scam. This is why you don't trust what random people tell you on the internet, especially when it comes to the choice of wallet which essentially puts your money at risk.
But either way, there is no doubt about it now that this wallet is fraudulent. They have absolutely no real life company backing, they don't have any reviews, and anyone is able to probably get a site just like this up within a week of hiring a web developer.
hmm i think im also at your situation to be exact, why im using this website cryptomerchantbank.co , i have a total 1.1 btc is that mean i lose all of my fund ... please!! is there anyone knows how to get my bitcoin back, im very poor right now
donate me 0.001 btc on my remitano wallet pls ( 3ESjzs1MxpFhyauDXNU7AZ6PL1rSC6rV5J )
No one is going to donate to you. Unfortunately, you can't get the money back, because you've chose to entrust some stranger online with your money. Since he has exclusive control over your bitcoins now, it's up to him whether or not he will honour his promises of holding your funds and paying you on demand, which he is not going to do due to the fact that the site ran by him was initially intentioned to scam people anyways. I would move on, potentially report the site to your country's online financial regulator or something like that (don't expect anything out of them), and move on.