Im sorry but it seems that everyone here wants to blame the user and treat the provider as all holy.
People, it's not the user's error here (except for a few small cases of someone not knowing what they're doing fully).
ALL of these Siri proxy hosts are overselling or not having a valid source of enough keys before taking your money. Yes, IMZDL is reputable, no doubt as I've used them for UDID registration and to get betas. But they've dropped the ball here.
People not being able to connect or getting please try again later is NOT a settings issue in 99% of the cases. Its the devs overselling their servers past capacity.
Anther huge issue with devs that have multiple servers is you never know who is using what server. For example, lets say each of the 3 servers can hold 50 users- 150 total people sold to. You cannot possibly predict, in a free-for-all tpye setup like this, who is on Server 1, who is on 2, and who on 3. There could be 80 people trying to access 3, 60 people trying 2, and 10 people trying 1. That's why some people are having success and others are not. Its too much of a cluster ****** the way it's set up.
Secondly, the servers are just being sold past their capacity, which I find a little dishonest. Then to disclaim quality of service is a further stab in the back. Don't oversell your servers, have iP4S' available to provide keys every single day, and have scheme of what users will be on what server, and refund issues won't be needed.
Devs put this clause in so they can oversell and keep your money, period. If they were confident in their product then it wouldn't be there.