Is there a specific procedure for transferring mined coins from Sparkpool to my wallet other than this- Open wallet, make sure it's on line, head over to Sparkpool and click the payout button and wait?

My first withdraw was faultless, I tried earlier to withdraw and nothing happened for ages, then it showed up in the wallet as a pending transaction but then it showed failed, it has tried twice and failed both. The Sparkpool page still shows the amount as 'matured' and 'applied' where the withdraw button should be but nothing is now happening.

Can you only withdraw at certain times of day or something? I must say it's about as clear as fucking mud, when do we get proper pools?