Well unfortunately my inbox and records do not show any messages from anyone matching your name or email address. I even went in and searched specifically for messages containing your store name as well.
I have 3967 emails in my current folders and over 13,000 + in backups. Nowhere am I able to find your information or a message from you. So if you sent a message a week or so back I for some reason never received it. I however did receive your email today at 6:57 am. Then before I had even had a chance to answer I see a forum post containing derogatory remarks about responses and customer service etc. So of course I am going to defend myself.
I have plenty of users who know full well my average response time to any email is less than 5 minutes and most the time less than 2 or 3 minutes. I monitor my emails frequently. This is during my usual hours and days in office which does not include Fri, Sat or Sunday. So you happen to e-mail today when I am not available but I still check daily for any emergency emails etc.
So my previous response was fit to the situation. It is unfortunate that Shopify RMA doesn't suit your needs however it does perform the job it was designed to do. There is always room for improvement which will come over time.
In fact there is a successor to Shopify RMA that is in the works right now that handles support tickets, returns, exchanges, reports, labels and more. It is also 100% embedded into Shopify without the need to leave site for admin or customer areas. That being said I have taken a break from development due to a family crisis that arose last night at 3 am... So until things here are settled I am on a break.
Jonathan