I tried to send coin for a monero address and I tried also to mining this address but an error message will be displayed : " Error: subaddress for mining reward is not yet supported!" How can I support a monero address ? Can you help me please !
The message is quite clear: you're trying to mine to a subaddress, which is unsupported at the moment. A Pull Request is open to add the feature, but the devs aren't agreeing apon the necessity of it.
If you want to solo-mine XMR, only use your main address and you'll be fine.
However, you should be able to ask a pool too use your subaddress to send your mining reward. If it's a pool issue, then get in touch with the pool owner and ask him to support transaction to subaddresses.