Issue with title and appointment times

I have installed appointments+ and set up an appointments page. The problem is that the title of the calendar says January 1970. Although the calendar itself is correct, none of the appointment times are clickable. I've attached a screengrab so you can see what I mean.

Also, I have tried looking for errors as suggested on a previous thread. There are a few warnings, but I'm not sure these point to any conflicts. The attached also shows these.