Hello, @Oliver Theiß,
1.. Alright, Thanks for the page URL I have fixed it on your site here is the code image: https://postimg.cc/bGnbK7yV, and here is the resulting image: https://postimg.cc/CZbBvb7W
2.. As per your requirement I have now set the price text in grey with white background check image here: https://postimg.cc/HV5g83LD
Please check back to your site after clearing the browser cache.
Regards 8Themes Team.