Issue display icon backend and frontend

Hi,
in this website the defaul icons don't diplay into backend and frontend

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And for example https://www.infinitymotion.com/calcolo-prestazione
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Below the error message:
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Access to font at 'https://infinitymotion.com/libraries/cegcore2/assets/semantic-ui/themes/default/assets/fonts/outline-icons.woff2' from origin 'https://www.infinitymotion.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
outline-icons.woff2:1 Failed to load resource: net::ERR_FAILED
index.php:1 Access to font at 'https://infinitymotion.com/libraries/cegcore2/assets/semantic-ui/themes/default/assets/fonts/icons.woff2' from origin 'https://www.infinitymotion.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
icons.woff2:1 Failed to load resource: net::ERR_FAILED
index.php:1 Access to font at 'https://infinitymotion.com/libraries/cegcore2/assets/semantic-ui/themes/default/assets/fonts/outline-icons.woff' from origin 'https://www.infinitymotion.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
outline-icons.woff:1 Failed to load resource: net::ERR_FAILED
index.php:1 Access to font at 'https://infinitymotion.com/libraries/cegcore2/assets/semantic-ui/themes/default/assets/fonts/icons.woff' from origin 'https://www.infinitymotion.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
icons.woff:1 Failed to load resource: net::ERR_FAILED
index.php:1 Access to font at 'https://infinitymotion.com/libraries/cegcore2/assets/semantic-ui/themes/default/assets/fonts/outline-icons.ttf' from origin 'https://www.infinitymotion.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
outline-icons.ttf:1 Failed to load resource: net::ERR_FAILED
index.php:1 Access to font at 'https://infinitymotion.com/libraries/cegcore2/assets/semantic-ui/themes/default/assets/fonts/icons.ttf' from origin 'https://www.infinitymotion.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
icons.ttf:1 Failed to load resource: net::ERR_FAILED
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the issue seems The problem seems to be due from the htaccess setting where we redirect all url to www domain.
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Could you to help resolve this issue?
Regards

Hi donato,
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It looks like this is due to your using multiple domains with CORS - please see this Medium article for some suggestions.
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Bob

Thanks but I only have one domain and the problem is intermittent.