Board Thread:Questions and Answers/@comment-25258217-20140804162503/@comment-25087059-20140813020510

Yeah, I pretty frequently encounter times when I can't connect on my iOS device. Once in a while I have trouble on the PC.

It's pretty hard to tell how often it's a problem with my internet connection or router and how often it's a problem on their end, but it definitely happens.

It rarely lasts long and like BunsenH said, I wouldn't worry about losing progress. If it's a frequent problem that doesn't seem to get better with time, their tech support may be able to help. I've never worked with them, but I've heard that others have had success troubleshooting connection issues.