x doesn't exist in signing requests

[OpenGrid]

GET parameter x is not present when receiving signing request on the server. All other wallets send x parameter as in whitepaper.

[skubit]

I haven't followed recent changes in the spec so perhaps I'm missing something here. I would need clarification on the issue to be able to address it.

As implemented, the client takes the bitid from the server and then sends a POST request. The request has a JSON body with bitid (which includes the x param), signature and address. I'm not aware of anything else that should be sent.

[OpenGrid]

According to specs, x parameter should be send as GET