Hi,
I did the update, so it’s now v. 1.3.14
I’ll try to give some idea of the source of the problem. It seems that the problem occurs at the moment when, in a short period of time, it gets a request from the form. This situation happened again during the weekend – 4 bookings for service with capacity value of 3. Two of them were made at 0:01, the other two at 0:04.
Moreover, between 0:00 and 1:00 we noticed peak traffic and that’s when bookings are made extra-curricular.
