Please tell me how to change what would be paid in Primecoin
If you are lazy, there's a variable called $btc in the file /libs/send_fh.php (line 14) which takes by default the value "BTC" (default value is seen in the /libs/faucethub.php)
Just change in the "send_fh.php" the « $btc » with "XPM", "DASH", "BLK", "LTC", "DOGE", "PPC" or whatever you want as currency.
Or if you want to do it better, go just before line 14 and add the line
$btc = "XPM";
Save and overwrite the send_fh.php file. You're done.
it did not worked out, it showing the error that the "coin address was invalid" please see to it.