I’ve found quite the opposite with the plugin author. Typically very responsive and helpful. He’s helped me do some things that really shouldn’t even be possible with the plugin and gone above and beyond. I have it functioning on multiple sites with as many as 600 pin locations on one site and it works great. Sorry you haven’t had the same results.
Never was able to get this to work just the way I wanted. But the Types Plugin by WP-Types now has term meta built in. It allows you to do basically the same thing, plus more. You can create special fields for taxonomies. It seems to be working well.
Have you tried deactivating the “Beautiful Math” portion of Jetpack if you have that installed? I had this issue with about 6 installs of the calendar after the last update and that resolved it on all of mine.
If you have Jetpack installed, try deactivating the “Beautiful Math” component. I have had the same display issues on multiple installs and that fixed it.
