Multisig request

Hello.
we have a request for a multisig. if someone could implement it, then we would be ready to pay for it. we need a fully working product.

what was presented not so long ago still does not work https://tzsignwallet.com ,it has been more than half a year, and there is still no result.

I do not know why this cannot be implemented until now.
if someone was ready to implement it, then we could agree on the price of the issue.

the testnet seems to be working. but the main network is already needed

some (temporary) reddit response has been received.