Where exactly is the proof of this?  

I haven't actually seen you show any proof that you got given one hash shown as the "Next Bet: Server Seed SHA256 Hash" value... then you made the bet and then the provably fair tab showed a completely different hash in the "Last Bet: Server Seed SHA256 Hash" section...

I've seen a lot of 20pt red font crying "scam"... but no actual proof.

Meanwhile... I went to ParaDice.io... and to start with I see this:



See the Next Bet hash? Then I make my roll... result is 27.22...



we go back to "Fair?" tab and we see:



Hash is now showing as the "Last Bet" hash... and I can see the last bet seed was "ANW11iJuvI8vmiCy2koi8Bcacl-27.22109999999999985220711096189916", which has the roll result 27.22...

The SHA256 for that seed = cb2b7a48508555c1373db0fd2aded04125c6949f452565323c3b974af283bd5d

which is exactly what they showed before and after my roll... so it all checks out.