Calendar Shows, But No Events?

I followed instructions for getting the calendar id & API key. No errors are showing up when previewing the page with the shortcode.

Below is my system report. Suggestions?

Thanks!

### WordPress Installation ###

Site Name: Plastic
Home URL: http://104.152.109.3/~barrelomonkeyz89/__sites/plastic
Site URL: http://104.152.109.3/~barrelomonkeyz89/__sites/plastic
Version: 4.2.6
Locale: en_US
Timezone: America/Los_Angeles
Multisite: No
Permalinks: /%postname%/
WP Memory Limit: 64 MB
WP Debug Mode: No
Script Debug: No

### Active Theme ###

Theme: Cobra (Kora child theme) –
Child Theme: Yes
Parent Theme: Kora – 1.0.4

### Active Plugins ###

AddFunc Head & Footer Code: 1.3
Yoast SEO: 3.0.7
WP Super Cache: 1.4.7
Facebook Like Box: 0.6.4
Simple Calendar: 3.0.13
Recent Facebook Posts: 2.0.8
WooCommerce: 2.4.8
Velvet Blues Update URLs: 3.2.4
Revolution Slider: 3.0.5
UberMenu 2 – WordPress Mega Menu Plugin: 2.4.0.3
WooDojo: 1.5.4
YouTube Channel: 3.0.9
ThemeNcode Social Follow Buttons: 1.0
Social Media Feather: 1.7.9
Duplicate Post: 2.6
Shortcodes Ultimate: 4.9.9
Contact Form 7: 4.3.1
WP Video Posts: 3.5

### Server Environment ###

Web Server: Apache
PHP Version: 5.5.30
MySQL Version: 5.6.28
Server Timezone: UTC
Display Errors: Yes
Safe Mode: No
Memory Limit: 256M
Upload Max Filesize: 128M
Post Max Size: 128M
Max Execution Time: 300
Max Input Vars: 2000
fsockopen: Yes
cURL: Yes
SOAP: Yes
SUHOSIN: No
WP Remote POST: Yes
WP Remote GET: Yes

### Client Information ###

IP Address: 104.152.109.3
Browser: Firefox 44.0 (Windows)

https://wordpress.org/plugins/google-calendar-events/