You can swap the hub internals (everything but the shell and the pawls) to the newer Pro 2 Evo ones- quite spendy but saves you rebuilding the wheel. It all fits in the old shell.
Alternatively, Hope will replace your axle, since they know it’s not fit for purpose. Might be worth asking about the Evo upgrade to see if they’ll cut you a deal, but they wouldn’t do anything for me (offered to sell me parts for RRP! Didn’t even discount for the price of the broken axle. No ta)
Some folks have been given a steel axle, don’t know if that’s an option still.
Oh and lastly- if it’s one of the tapered maxle lites, it makes the problem worse. Swapping to a full-thickness axle reduces the problem but doesn’t fix it.