Beside this there are a view bugs and not so perfect design parts within their extension. So when buying RS Forme Pro you buy something below perfect and you have to pay again and again and again - and each time it is not cheap. These are the reason why i can only rate this product average. Im no longer a customer @ RS Joomla!
Yes, RSForm! Pro is a commercial product - we expect you to have an active subscription if you want to download it from our servers and receive support.
Regarding your "bugs" and "not so perfect designs" - we'd like to hear your suggestions, since you didn't mention anything here (I'm sure if they're actually bugs and not misconfigurations from your side, we've already solved them by now since our customers are very active regarding this area).
If you're not happy with the 6 months unlimited domains support subscription you've bought, you can always opt for the cheaper 12 months single domain subscription. I doubt any other Joomla! developer offers a better price at 19,00 EUR.
Just have a look into the forum over there where the support is eager to tell people that everything is ok as it is, beside everyone there is complaining of problems say have with JoomSport or JoomSport Pro.
This component extension is very poorly coded and the support is not taking customers complaints seriously.