Events page edit help

Hello. I'll be honest here I quite hate the events page customisation in SquareSpace. I run a company that holds multiple training sessions each week, adding them to my website is an absolute nightmare. I create an event, title it appropriately, date it and add a location, then duplicate it 12 times for a class each month. However, a lot of the time when I do, my events keep disappearing (the newly created duplicates). There isn't a set number but no matter if I refresh or not, it will not come back until I create a new event and duplicate that, then it takes away some of the new ones and restores some or all of my old "ghost" duplicates. This happens when the save and undo/redo buttons disappear, and the publish button turns into a loading square that doesn't load anything. This is super frustrating, and I have contacted squarespace but I have yet to receive a response back. I can't even filter my results based on name or location, nor am I able to find a way to efficiently edit multiple events in one go.

My question here is regarding the last point. My events are held all over the world in different cities, and I was wondering if there is a way to effectively edit multiple events (based on name, location, or category), for it to apply to all different events that meet the criteria; similar to how editing one event page applies to all pages or the products page under store? I'm using a 7.1 template.

Lastly, I read on the forums somewhere that event duplicates are not shown by google or other SSOs as they're flagged as duplicates. Is this true?

Thanks in advance.