Hi Arben,
Sorry to hear of the problem you are having.
Let the above options to as it is for now.
Please make sure that you are using below latest version of theme.
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This is a simple PHP warning and most of the time it doesn’t affect the functionality of site so it is nothing to worry about!
Do you have WP_DEBUG set to true in your wp-config.php file?
If you do then please set it to false.
This will hide the warning messages and you will be able to use your site normally.
Best regards,
Shufflehound team