Is this a regular thing?
I ask because a few times during the last few days I have been occasionally getting that "oops, we couldn't load the page" message that we get from time to time due to issues server-side. I wonder if perhaps you were trying to log in during one of those times that the site was throwing off error messages (usually if I hit refresh it finds it again on the second go, so it only lasts for a few seconds - very rarely we have had times when the forum was down for a few hours, just to say that this isn't something that's never happened before).
Another alternative if you don't want to stay logged in (if you're using a shared computer) would be to type your password out somewhere temporarily (perhaps a different tab of your internet browser?) and then copy and paste it in the "password" box when you go to login. That way at least if you have to log in multiple times, you would only have to type it all the way out once. Just remember to erase it from wherever you typed it before you leave the computer if someone might come along that you don't want seeing it! I don't know what kind of computer skills you have, but if you don't know how to copy and paste I can walk you through that!