Only a couple of subscriptions are supported for spot VM and I can't be 100% 0143p is one of them. Its a sponsored subscription so maybe. As you can see below, sponsored subscription seems to be supported:
https://learn.microsoft.com/en-us/azure/virtual-machines/windows/spot-vms#limitations
https://azure.microsoft.com/en-us/offers/ms-azr-0143p/
I would open a case using that link:
https://azure.microsoft.com/en-us/support/create-ticket/
And provide
- Azure subscription number
- Offer id : 0143p
- Both links I provided
--I hope this helps. Please Accept it as an answer and "Up-Vote" the answer or message(s) that helped you so that it can help others in the community looking for help on similar topics
Regards,
Didier3001