Hi there, Thomas! Thanks for getting in touch and sorry for the issues. Let’s get this back on track together.
Both issues sound like a conflict with either your theme or another installed plugin. Will you please follow these troubleshooting steps and let me know what you find?
since the site is active i’ve made the widget inactive
Is it possible to create a test site in a subdirectory? That would give us more flexibility to troubleshoot without interrupting your existing site.
If so, please go ahead and set that up with a fresh WordPress installation, a default WordPress theme (like Twenty Fourteen), and only The Events Calendar, The Events Calendar PRO and Community Events plugins installed for the time being.
Let’s start there and see what we find. 🙂
Cheers!
Geoff