1 - BHW rules suggest that you should create a new thread for stuff like this in stead off reviving and old thread. Your welcome to tag people like
@loopline in new threads so they see it.
2 - Are we talking about hooking scrapebox to capcha sniper or what are we talking about?
3 - Im not really sure I follow, if you create a new thread some screenshots would be great. But if the test works, the I would say its working and just use it and don't worry about the balance. At least to test and see if its working. Also it sounds like your getting the error in captcha sniper and not in scrapebox? Im not an expert on captcha sniper so if the error is in captcha sniper then you would want to contact their support and ask.
Scrapebox is pretty straight forward, its going to send the request to the service you setup. Did you check the box in scrapebox that says captcha sniper?