A strange mistake in my conversation schedule

Two of my students wanted to sign up for my conversation next week (9-15 February), but they couldn’t because they receive a strange notice ‘no time is available this week’.
They tried to do it on the weeks from 16-22 February and from 23 to 29 February - with the same notice NO TIME IS AVAILABLE THIS WEEK, and only since 28 of February it’s possible to sign up for my conversations.
It’s some kind of a mistake in my conversation schedule for learners because I have a lot of vacant time for a conversation in my real schedule.

Sorry about that, Evgueny. You already mentioned that problem a few days ago on other thread and I reported it to our team. They are looking into it and I just confirmed with them that the issue should be resolved soon.
Thanks for your patience.