After looking at my scheduled actions FollowUp Emails and the WooCommerce_update_Marketplace_suggestions are the only hooks present.
I’ll also try recreating the error on my staging site later today and see if deactivating FollowUp lets me activate your plugin again.
Can confirm we have FollowUp Emails plugin activated but aren’t using the functionality.
If you’d like I can still get a list of all plugins in use.
Same for us! Watching for a new update to come through.
