Serene Steelsaid: It's a broken AF system, don't use it.
Sadly, I have to agree. It worked once or twice and then I just get declined 100% of the time. I tried to look for a guide on these surveys in the hopes that they repeat and would have the answers, but I did not find anything.
If you're having trouble with rewards, click here, scroll down until you see 'Earning Rewards Troubleshooting' -- Click the article for the provider that you used, and then follow the instructions to get in contact with their support. If they're unable to resolve the issue for you, then you can get in touch directly with Jagex by clicking here, read through the article and then click 'Contact Us' at the bottom to send in a ticket