Qmee question

I've installed Qmee and used it for half a day yesterday. I've made £4.40. Today I refresh the app every 10 to 15 mins and there's nothing.

Every hour like 1pm, 2pm, 3pm I check and there's a survey. I click on it and before clicking begin, it boots me out and say they've got enough respondents or other excuses. Is that normal?

Today I've made £0.45 and that's about it. Is there a trick to it? Like when the surveys are posted?