I Opened a support request with MVV and now have a fix as follows …
We have figured out the issue with the plugin.
Plugin has issues when you have set wordpress permalink structure default one (https://summersup.co.uk/wp-admin/options-permalink.php)
We will fix this in the next update.
Meanwhile, you can try switching the permalink to “Post name’ mode.
I did as suggested under ‘Settings’ ‘Permalinks’ and the calendar came back to life.
I hope this helps
Hi did you manage to get this resolved as I am having the same issue now.
Thanks
Ian