Time zone change now not working

Hello I’ve been using your plugin and recently change my server and wordpress date settings. Now when I try to add an event there is no location or date/time options and a box at the top saying : Selected time zone “UTC+2” will be treated as Europe/Paris.

An ideas on how I can fix this please?
I really don’t want to have to uninstall this plugin.

Thanks

https://www.ads-software.com/plugins/all-in-one-event-calendar/