Received some BTC testnet coins, thanks. But the address I was given to use, in sending back the coins, seems problematic.
I get the following msg from 2 block explorers:
Sorry, 'mv4myY3Su5gjcDNzbMLKBQkBicCtHUtFB' is not a valid BTC Testnet address, wallet name, transaction or block
and
Search by address failed mv4myY3Su5gjcDNzbMLKBQkBicCtHUtFB
Can you advise?
Thanks