You probably won't get any response from users here on this board for questions related to RA, especially from regulars like us as most of us don't offer this to clients.  If you are in the PTO FB group, there are a number of users who do.

Based on discussions in the FB group, there are people having problems with RA but none, from what I recall, about refunds being bounced from RA because there is no account to assign them to.  This leads to the question whether RA has set up your account correctly - as you are aware, enrollment in RA is done through RA completely outside of PTO.  

In any case, you will need to contact RA directly to resolve your problem in the first instance.