Character encoding issues with this plugin

On my website, every post and page had strange character encoding issues, such as:

– ???
– arena€?t
– didna€?t
etc…

When using apostrophes etc.
See screenshot https://imgur.com/l3BRNpG

So all my content was a mess.

After checking my config, php, sql settings everything was set to UTF-8.

I started to remove plugins, and it was when i remove this plugin that the issue fixed itself.

Is there a fix for character encoding when using this plugin at all, as I’m a bit gutted to be removing it?

Thanks