The verification file must be available under the following directory.
https://shop.allianceporcidoc.fr/.well-known/pki-validation/8B5AB9607F9CC3A51A41399C83244FBE.txt

The content contained in the file should be:
92B2E88FBA3BF5FBACB9A45DCAB495FFC186CCA3401D136A860B54957E7534B6
sectigo.com
5r5h5pLdzHa5555o555a