Me too, I initially encountered an error on the personal history page under the activities. I got a reply from their tech support to try it again but now I cannot continue my application.
I guess we are on the same boat. Is anyone else encountering this issue?
What happened to you guys in the end?
I have my ITA and 25 days left to upload the docs but can't get in!
Very nervous!
How did you contact their tech support? I filled in the online form but not sure how fast they are.. can't afford to lose more time...
I faced the same issue at 7pm. My browser has always been configured not store any history or searches. So cleaning up the cache didn't work for me. However, when I updated my Java to Version 8, update 45 (on Mac - Yosemite OS), everything worked like magic. Uploaded docs, paid, and received a receipt (for PGWP) right away.