Not sure with it, as I've never paid with it, and I'm unsure if it's logo is in the list, Searching around doesn't shows Maestro in the OVH direct processing list, so it's more probable it's not accepted directly by OVH.
There's also PayPal, but there the situation is somehow complex. It's accepted on a per-country basis. However, I'm not sure if depends on the car issuance country, or the end user country. If you have used your Maestro Card with Paypal previously, it's more likely it will be accepted. You can check the pre-country list here:
https://www.paypal.com/us/cgi-bin/we...4872d2f2ae25dc