Exactly. I have used probably a hundred online casino. It is the first time I see a casino keeping the client seed as is, and changing the server seed.
Their system don't do continuous manipulation. Those gets caught. This one is similar n some ways to 999dice which was also an anonymous casino, server calculates the result real time before serving up the server seed in autobet, and under certain conditions like higher bet amount compared to net deposits, they skip that server seed and generate another. Yes, I cannot prove it, but this is how it is designed.
As I said, it is possible for the server to generate thousands of seeds before, and if it changes every bet, it can give you the same result again and again if it is designed like that. Some people think that a crash game cannot land at 1.0x more than 3 times in a row; the chance is very low. But with the mentioned design, it is possible for the crash game to crash a hundred times in a row at 1.0x multiplier. The dangerous side is that you can still verify the bet with the server seed, client seed, and nonce.
To be very clear, I am not saying that Betpanda is manipulating the results. I am just saying what is possible with the current design. So, It would be better for Betpanda to change this system to make it more fair and transparent for everyone.