You need to sign the attached document. As we are based in France the document is in French. By signing the document, you are stating that you are legally not obligated to pay VAT. Without this signed document, OVH must charge you VAT.
Also include a copy of a current bill with your name and address on it along with a photo ID. This is to prove your your place of residency.
After receiving the documents, the TVA will be removed from future purchases and renewals. Unfortunately, OVH can not reimburse you for TVA already paid.