MS Bookings

When I create my services and bookings, I experience two problems:

1. Not every booking is available on the link that I am sending to others - shows no availability although I select the correct one and it work for some and not for others.
2. Not every booking shows on "Overview" view and I have to scroll on Calendar to be able to Edit it. Again, works for some but not the others.

I am doing nothing different, but the dates and it works for some but not others. Is this a common problem?