Scheduling system is out of sync

I have a problem with the scheduling system that seems to be getting worse. For the last month some lesson times have had a one hour discrepancy. In other words, a LingQer has signed up for a lesson with me at 8pm London time, but my schedule shows it for 7pm London time. This week she booked a conversation with me for tomorrow at 8pm London time, which showed up on my schedule as 8pm today. I contacted her 24 hours earlier than she was expecting me.

What is causing this and can it be fixed soon?

Sorry for the trouble here! Would you send an email to with the username and a link to the conversation report so we can take a closer look into this?