Hello,
If your hosting support is not qualified to install the PHP info and check the local value of the max_execution_time I would recommend you to think about changing your hosting https://prnt.sc/whl07b https://gyazo.com/7fe4a9a533b6f2c1adc322f87f75de27
This value does not depend on theme or plugins, because as you can see we enabled the default WP theme and disabled all the plugins except WooCommerce and PHP info.
So, contact them to change also the local value.
Regards