abcde.be was just an example. I got the message for another domainname. Why this error keeps coming I don't know. I hope my domainname won't expire before this is figured out.
What has DNS to do with the payment system of OVH? My domainname is registered by OVH and it's payment system says I can't renew the subscription. Why should I contact DNS when OVH warned me that I need to pay before a certain date?
I suggest you to view the status of your Belgian domain name with the registry (DNSBelgium), in order to compare the expiration dates with the one claimed by OVH.
This is not an issue with the DNS servers or the DNS protocol.
If there is an issue with OVH, please raise an incident in your OVH customer area.