I've registered my domain at NIC.AR (Argentina). There I can only fill the host address where to delegate my domain, but no CNAME or other info can be added.
Besides, to be quickly on air, I'm using Wix site to host my website, so I don't have access to the root / tree in order to use the other two verification methods.
If I don't validate my domain I can't go on. Please let me know what else do you need so you can verify my domoin is mine. For example, you can check my domain is mine at nic.ar .
Thanks
Alejandro Perelman