Email Subscribers screen blank

Hi, I’m using the plugin on a multisite installation, but it stopped working as of the latest WordPress update. The main “Email Subscribers” screen is now blank, and I’m unable to import subscribers. Do you know of any issue with multisite installations having this issue? I have deactivated all other plugins to test, but no luck.I also tried installing a past version of the plugin, but the error remains the same (making me think it’s something with Multisite perhaps?)

Any ideas appreciated!