Hi
We are also having the exact same issue, after payment is received and the order has been approved, we still need to go to the client profile in WHMCS and manually change the registrar from none.
This is a major pain in the backside as everything else is setup automatically but domain orders cause us the need for extra support. is there a hook we can use to set this automatically from none to the correct registrar?
I'm getting to the point where I am looking at other ways to host without WHMCS, The encryption makes WHMCS so limited it pains me.
I hope you can provide a fix for this issue, Would save a lot of headaches let me tell you.
if not a fix then encryption key would be nice so i can fix it myself
Kind Regards
Mal