Hi @stylingagenten,
Greetings from WebToffee support.
The slow query warning you mentioned in the screenshot is due to the auto-apply coupons on your site.
The plugin inspects for five valid coupons at a time instead of checking all coupons at once to avoid additional load on your site. If there are no valid coupons during the first check, it will then check the next 5 auto-apply coupons. And this is continued until all auto-coupons are checked.
You may disable the Apply coupon automatically from unwanted coupons to reduce the issues with queries.
Regarding your second query, we have been able to detect the duplicate queries on the My account page. We will be addressing this issue and optimizing it in the next release of the plugin.
Thank you for your understanding.