This took me a little while to get to the bottom of. I found some curious payments in your account history that had corrupted the data and resulted in the accounts page showing the error that it did.
I removed the corrupted data and now your accounts page renders as you would expect.
I changed your password to take a look into this so if you just reset your password using the Forgot Password link you’ll have access to your account again.
I am not sure what caused this, and given that you have been playing with your account quite a lot it may be tricky to track down. If you are creating payments and you see this happen again, please do let me know and take a note of exactly how you had been creating payments.
Your issue points to a small bug in our system and it would be great if we can track it down. So your help would be much appreciated.