We have a bug report system with our chat support agent, Harmony, that is preferred to be used so it can properly try and log the issues.

I would love to know a bit more detail about what you are encountering with logging in as I haven't been able to see any issues as I have been testing on multiple computers, browsers, and accounts.

What song were you trying to purchase? I need to know the details so I can look at the logs, also something Harmony can help with.