Website does not show changes to calendar

I have updated my Google calendar but the updates have not shown on the website.
It has been days now since the update.

Thank you for any help you can give.
Ian

+ I have purged the cache
+ No cloudflare or cache plugins used
+ This is the only plugin on the site (2 others but disabled)
+ The theme is up to date (Divi)
+ I upped the PHP limit to 64Mb
+ Shortcode being used: [calendar id=”219″]
+ System report :

### WordPress Installation ###

Site Name: Captains Lane Community Centre
Home URL: https://captainslane.org.uk
Site URL: https://captainslane.org.uk
Version: 4.9.8
Locale: en_US
Timezone: UTC
Multisite: No
Permalinks: /%postname%/
WP Memory Limit: 64 MB
WP Debug Mode: No
Script Debug: No

### Active Theme ###

Theme: CLYCC Child –
Child Theme: Yes
Parent Theme: Divi – 3.15

### Active Plugins ###

Simple Calendar: 3.1.19

### Server Environment ###

Web Server: LiteSpeed
PHP Version: 5.6.38
MySQL Version: 5.5.5-10.2.17-MariaDB-log-cll-lve
Server Timezone: UTC
Display Errors: No
Memory Limit: 512M
Upload Max Filesize: 128M
Post Max Size: 128M
Max Execution Time: 60
Max Input Vars: 1000
fsockopen: Yes
cURL: 7.60.0
OpenSSL/1.0.2k
SOAP: No
SUHOSIN: No
WP Remote POST: Yes
WP Remote GET: Yes

### Client Information ###

IP Address: 91.197.230.219
Browser: Chrome 69.0.3497.100 (Windows)

The page I need help with: [log in to see the link]