Well, this is normal with most casinos some time transaction networks become congested even blockchain network witness the same sometimes, so I can't say having difficulty in making deposits is an attribute that links two casinos together. My question is do you try to deposit 1xbit at the same time you try to make deposits on coinplay and had the same replies?
If the answers are yes then we have new evidence to link the two casinos because that will also mean their use the same payment gateway, which also translates into the same team management, but if you were able to access 1xbit deposits and experienced difficulty in accessing coinplay that show the unconnected link between the two casinos. As the admin has stated that we should expect more information since he makes contact with the dev team to get the right replies to these questions in a more technical way.