Don’t worry about the warnings because it doesn’t affect anything in your website, the reason why you can see warnings is that your WP_DEBUG is set to true, I advise to disable your WP_DEBUG because WP_DEBUG is just intended for debugging some PHP issue, to disable your WP_DEBUG please go to your wp-config.php file and set WP_DEBUG to false.
define( 'WP_DEBUG', false);
Please check out our documentation regarding Superfly plugin setup.
In case if it does not help you please share your details in a secure note. Please provide the following details
- WordPress Login URL
- Admin level username and password
You can find the Secure Note button at the bottom of your posts
Please share all the details so that we can check why Superfly plugin not activating.